Can not open QETEST and NDVRTEST from steplib

Document ID : KB000115782
Last Modified Date : 26/09/2018
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We have removed V18R0 datasets from linklist and tried to open V18R12 QE and Endevor panel from logon procedure STEPLIB. We are getting a S0C4 abend in EXIT7

How can we solve this problem?  
All supported versions of Endevor
Verify that the C1EXITS Load library has been added to the STEPLIB in the logon procedure.