CASSI2150E Error loading dfhtinit

An error occurred loading dfhtinit. Either the module dfhtinit.gnt is not in $TXDIR/lib or the environment variable TXDIR is not properly set.
System Action:
Client initialization is terminated.
Resolution:
Correct TXDIR or the location of dfhtinit.gnt and retry.
Module:
dfhtasci
Destination:
Standard out