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  <xs:element id="ctlp_NotesAndLoansReceivableInYearThree" abstract="false" name="NotesAndLoansReceivableInYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ctlp_TwentyTwentyOneJPMorganRevolvingCreditFacilityMember" abstract="true" name="TwentyTwentyOneJPMorganRevolvingCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ctlp_NumeratorForBasicAndDilutedPerShareAbstract" abstract="true" name="NumeratorForBasicAndDilutedPerShareAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
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  <xs:element id="ctlp_FederalOperatingLossCarryforwards" abstract="false" name="FederalOperatingLossCarryforwards" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="ctlp_ScheduleOfPreferredStockTableTableTextBlock" abstract="false" name="ScheduleOfPreferredStockTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
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  <xs:element id="ctlp_TwentyTwentyTwoSecuredTermFacilityMember" abstract="true" name="TwentyTwentyTwoSecuredTermFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="ctlp_NumberOfConversionsOfPreferredStockAndCumulativePreferredStockDividends" abstract="false" name="NumberOfConversionsOfPreferredStockAndCumulativePreferredStockDividends" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
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  <xs:element id="ctlp_ClassOfWarrantOrRightExercisable" abstract="false" name="ClassOfWarrantOrRightExercisable" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ctlp_StockOptionIncentivePlan2014Member" abstract="true" name="StockOptionIncentivePlan2014Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="ctlp_DebtInstrumentCovenantLeverageRatioAndBorrowingBaseLeverageRatioMaximum" abstract="false" name="DebtInstrumentCovenantLeverageRatioAndBorrowingBaseLeverageRatioMaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="ctlp_TwentyTwentyOneJPMorganCreditFacilityFirstAmendmentMember" abstract="true" name="TwentyTwentyOneJPMorganCreditFacilityFirstAmendmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ctlp_StockIssuedDuringPeriodSharesWarrantsExercised" abstract="false" name="StockIssuedDuringPeriodSharesWarrantsExercised" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ctlp_HudsonExecutiveCapitalLPMember" abstract="true" name="HudsonExecutiveCapitalLPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ctlp_YokeMember" abstract="true" name="YokeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
