This article explains that the RTS 173 on _mF7801 error is due a change in the control routine support library.
Problem:
After an upgrade from Application Server for Server Express 2.0.11 to Micro Focus Server 5.0, generated code gives the following error message:
Load error : file '_mF7801'
error code: 173, pc=0, call=1, seg=0
173 Called program file not found in drive/directory
Resolution:
The RTS173 on _mF7801 is due a change in the control routine support library between two versions of Server Express.
GNT code created with Server Express 2.0.11 or earlier will not work with Server 5.0. The solution is to either deploy intermediate code (INT) created with the older version of Server Express or upgrade Server Express and regenerate the GNT code using the new version.
