CASSI1746W Error loading resident module support

The system module required to support resident programs and user exits could not be loaded.
System Action:
Region initialization will continue but resident programs and user exits will not function correctly.
Resolution:
Make sure that dfh0load.dll is installed into the CICS system executables directory. Alternate versions are supplied in files\sys. Backup existing module and replace with alternate module and retry.
Module:
dfheini1
Destination:
Console and standard error.