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    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_7E49D498137E8DF859046E7BD1D66465_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_7E49D498137E8DF859046E7BD1D66465" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
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    <link:label id="lab_cmpr_TermLoanDomain_18C73798E7A86D96B1AD6E7BD1D77497_terseLabel_en-US" xlink:label="lab_cmpr_TermLoanDomain_18C73798E7A86D96B1AD6E7BD1D77497" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term Loan [Domain]</link:label>
    <link:label id="lab_cmpr_TermLoanDomain_18C73798E7A86D96B1AD6E7BD1D77497_label_en-US" xlink:label="lab_cmpr_TermLoanDomain_18C73798E7A86D96B1AD6E7BD1D77497" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Term Loan [Domain]</link:label>
    <link:label id="lab_cmpr_TermLoanDomain_18C73798E7A86D96B1AD6E7BD1D77497_documentation_en-US" xlink:label="lab_cmpr_TermLoanDomain_18C73798E7A86D96B1AD6E7BD1D77497" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Term Loan due on February 8, 2018 issued as part of amendment to credit facility on February 8, 2013</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cmpr_TermLoanDomain_18C73798E7A86D96B1AD6E7BD1D77497" xlink:to="lab_cmpr_TermLoanDomain_18C73798E7A86D96B1AD6E7BD1D77497" xlink:type="arc" />
    <link:label id="lab_cmpr_RevolvingLoanMaturityJune142023Member_05BDBA92D0DE332940996E7BD1D72F63_terseLabel_en-US" xlink:label="lab_cmpr_RevolvingLoanMaturityJune142023Member_05BDBA92D0DE332940996E7BD1D72F63" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving Loan, Maturity June 14, 2023</link:label>
    <link:label id="lab_cmpr_RevolvingLoanMaturityJune142023Member_05BDBA92D0DE332940996E7BD1D72F63_label_en-US" xlink:label="lab_cmpr_RevolvingLoanMaturityJune142023Member_05BDBA92D0DE332940996E7BD1D72F63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving Loan, Maturity June 14, 2023 [Member]</link:label>
    <link:label id="lab_cmpr_RevolvingLoanMaturityJune142023Member_05BDBA92D0DE332940996E7BD1D72F63_documentation_en-US" xlink:label="lab_cmpr_RevolvingLoanMaturityJune142023Member_05BDBA92D0DE332940996E7BD1D72F63" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revolving Loan, Maturity June 14, 2023 [Member]</link:label>
    <link:loc xlink:href="cmpr-20190331.xsd#cmpr_RevolvingLoanMaturityJune142023Member" xlink:label="loc_cmpr_RevolvingLoanMaturityJune142023Member_05BDBA92D0DE332940996E7BD1D72F63" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_5C1A7CF913C5E8D37BC96E7BD1D78EFF_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_5C1A7CF913C5E8D37BC96E7BD1D78EFF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_5C1A7CF913C5E8D37BC96E7BD1D78EFF_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_5C1A7CF913C5E8D37BC96E7BD1D78EFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_5C1A7CF913C5E8D37BC96E7BD1D78EFF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_5C1A7CF913C5E8D37BC96E7BD1D78EFF" xlink:to="lab_us-gaap_LongtermDebtTypeAxis_5C1A7CF913C5E8D37BC96E7BD1D78EFF" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_BA7A0BBD618D455435E06E7BD1D71BE9_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_BA7A0BBD618D455435E06E7BD1D71BE9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_BA7A0BBD618D455435E06E7BD1D71BE9_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_BA7A0BBD618D455435E06E7BD1D71BE9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_BA7A0BBD618D455435E06E7BD1D71BE9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_BA7A0BBD618D455435E06E7BD1D71BE9" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_BA7A0BBD618D455435E06E7BD1D71BE9" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_BAAA13713CEE5F9CC80E6E7BD1D8C458_terseLabel_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_BAAA13713CEE5F9CC80E6E7BD1D8C458" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility [Member]</link:label>
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_BAAA13713CEE5F9CC80E6E7BD1D8C458_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_BAAA13713CEE5F9CC80E6E7BD1D8C458" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_BAAA13713CEE5F9CC80E6E7BD1D8C458" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember_BAAA13713CEE5F9CC80E6E7BD1D8C458" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember_BAAA13713CEE5F9CC80E6E7BD1D8C458" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditMember_2EA8BE285B00E29294706E7BD1D9BE1C_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_2EA8BE285B00E29294706E7BD1D9BE1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit [Member]</link:label>
    <link:label id="lab_us-gaap_LineOfCreditMember_2EA8BE285B00E29294706E7BD1D9BE1C_label_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_2EA8BE285B00E29294706E7BD1D9BE1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditMember" xlink:label="loc_us-gaap_LineOfCreditMember_2EA8BE285B00E29294706E7BD1D9BE1C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditMember_2EA8BE285B00E29294706E7BD1D9BE1C" xlink:to="lab_us-gaap_LineOfCreditMember_2EA8BE285B00E29294706E7BD1D9BE1C" xlink:type="arc" />
    <link:label id="lab_cmpr_SeniorNotesdue2022Member_4B57CB106E7F3C9133B46E7BD1D9350E_terseLabel_en-US" xlink:label="lab_cmpr_SeniorNotesdue2022Member_4B57CB106E7F3C9133B46E7BD1D9350E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior Notes due 2022 [Member]</link:label>
    <link:label id="lab_cmpr_SeniorNotesdue2022Member_4B57CB106E7F3C9133B46E7BD1D9350E_label_en-US" xlink:label="lab_cmpr_SeniorNotesdue2022Member_4B57CB106E7F3C9133B46E7BD1D9350E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes due 2022 [Member]</link:label>
    <link:label id="lab_cmpr_SeniorNotesdue2022Member_4B57CB106E7F3C9133B46E7BD1D9350E_documentation_en-US" xlink:label="lab_cmpr_SeniorNotesdue2022Member_4B57CB106E7F3C9133B46E7BD1D9350E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Senior unsecured notes due 2022.</link:label>
    <link:loc xlink:href="cmpr-20190331.xsd#cmpr_SeniorNotesdue2022Member" xlink:label="loc_cmpr_SeniorNotesdue2022Member_4B57CB106E7F3C9133B46E7BD1D9350E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cmpr_SeniorNotesdue2022Member_4B57CB106E7F3C9133B46E7BD1D9350E" xlink:to="lab_cmpr_SeniorNotesdue2022Member_4B57CB106E7F3C9133B46E7BD1D9350E" xlink:type="arc" />
    <link:label id="lab_cmpr_SeniorNotesdue2026Member_DB48423EC2F418BA34D76E7BD1D9F634_terseLabel_en-US" xlink:label="lab_cmpr_SeniorNotesdue2026Member_DB48423EC2F418BA34D76E7BD1D9F634" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior Notes due 2026 [Member]</link:label>
    <link:label id="lab_cmpr_SeniorNotesdue2026Member_DB48423EC2F418BA34D76E7BD1D9F634_label_en-US" xlink:label="lab_cmpr_SeniorNotesdue2026Member_DB48423EC2F418BA34D76E7BD1D9F634" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes due 2026 [Member]</link:label>
    <link:label id="lab_cmpr_SeniorNotesdue2026Member_DB48423EC2F418BA34D76E7BD1D9F634_documentation_en-US" xlink:label="lab_cmpr_SeniorNotesdue2026Member_DB48423EC2F418BA34D76E7BD1D9F634" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Senior unsecured notes due 2026.</link:label>
    <link:loc xlink:href="cmpr-20190331.xsd#cmpr_SeniorNotesdue2026Member" xlink:label="loc_cmpr_SeniorNotesdue2026Member_DB48423EC2F418BA34D76E7BD1D9F634" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_B28D1B1BC793A83CBF9E6E7BD1DA19CB_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_B28D1B1BC793A83CBF9E6E7BD1DA19CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_B28D1B1BC793A83CBF9E6E7BD1DA19CB_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_B28D1B1BC793A83CBF9E6E7BD1DA19CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_B28D1B1BC793A83CBF9E6E7BD1DA19CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_B28D1B1BC793A83CBF9E6E7BD1DA19CB" xlink:to="lab_us-gaap_ShortTermDebtTypeAxis_B28D1B1BC793A83CBF9E6E7BD1DA19CB" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_BF26F1CA29192F1423D36E7BD1DA7603_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_BF26F1CA29192F1423D36E7BD1DA7603" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_BF26F1CA29192F1423D36E7BD1DA7603_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_BF26F1CA29192F1423D36E7BD1DA7603" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_BF26F1CA29192F1423D36E7BD1DA7603" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_BF26F1CA29192F1423D36E7BD1DA7603" xlink:to="lab_us-gaap_ShortTermDebtTypeDomain_BF26F1CA29192F1423D36E7BD1DA7603" xlink:type="arc" />
    <link:label id="lab_cmpr_FinancialCovenantTypeAxis_8F7D37DCDA5A606550576E7BD1DCB551_terseLabel_en-US" xlink:label="lab_cmpr_FinancialCovenantTypeAxis_8F7D37DCDA5A606550576E7BD1DCB551" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Covenant, Type [Axis]</link:label>
    <link:label id="lab_cmpr_FinancialCovenantTypeAxis_8F7D37DCDA5A606550576E7BD1DCB551_label_en-US" xlink:label="lab_cmpr_FinancialCovenantTypeAxis_8F7D37DCDA5A606550576E7BD1DCB551" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Covenant, Type [Axis]</link:label>
    <link:label id="lab_cmpr_FinancialCovenantTypeAxis_8F7D37DCDA5A606550576E7BD1DCB551_documentation_en-US" xlink:label="lab_cmpr_FinancialCovenantTypeAxis_8F7D37DCDA5A606550576E7BD1DCB551" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Our credit agreement contains financial covenants calculated on a trailing twelve month basis.</link:label>
    <link:loc xlink:href="cmpr-20190331.xsd#cmpr_FinancialCovenantTypeAxis" xlink:label="loc_cmpr_FinancialCovenantTypeAxis_8F7D37DCDA5A606550576E7BD1DCB551" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cmpr_FinancialCovenantTypeAxis_8F7D37DCDA5A606550576E7BD1DCB551" xlink:to="lab_cmpr_FinancialCovenantTypeAxis_8F7D37DCDA5A606550576E7BD1DCB551" xlink:type="arc" />
    <link:label id="lab_cmpr_FinancialCovenantTypeDomain_3C3EF806299C769E8C9B6E7BD1DC07B3_terseLabel_en-US" xlink:label="lab_cmpr_FinancialCovenantTypeDomain_3C3EF806299C769E8C9B6E7BD1DC07B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Covenant, Type [Domain]</link:label>
    <link:label id="lab_cmpr_FinancialCovenantTypeDomain_3C3EF806299C769E8C9B6E7BD1DC07B3_label_en-US" xlink:label="lab_cmpr_FinancialCovenantTypeDomain_3C3EF806299C769E8C9B6E7BD1DC07B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Covenant, Type [Domain]</link:label>
    <link:label id="lab_cmpr_FinancialCovenantTypeDomain_3C3EF806299C769E8C9B6E7BD1DC07B3_documentation_en-US" xlink:label="lab_cmpr_FinancialCovenantTypeDomain_3C3EF806299C769E8C9B6E7BD1DC07B3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Domain] for Our credit agreement contains financial covenants calculated on a trailing twelve month basis.</link:label>
    <link:loc xlink:href="cmpr-20190331.xsd#cmpr_FinancialCovenantTypeDomain" xlink:label="loc_cmpr_FinancialCovenantTypeDomain_3C3EF806299C769E8C9B6E7BD1DC07B3" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCreditFacilityLineItems_8E3D58262EF68E5687FA6E7BD1DD2728_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLineItems_8E3D58262EF68E5687FA6E7BD1DD2728" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit Facility [Line Items]</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityLineItems_8E3D58262EF68E5687FA6E7BD1DD2728_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLineItems_8E3D58262EF68E5687FA6E7BD1DD2728" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility [Line Items]</link:label>
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