When trying to execute a SQL program in Mainframe Express using the Host Compatibility Option (HCO), user is getting  an '173 Called program file not found in drive/directory MFHCOLIB.LBR' runtime error even though MFHCOLIB.LBR does exist in the Mainframe Express\\mfhco\\BIN directory.

 

From the command line, add the path to the Mainframe Express\\mfhco\\BIN directory to the COBDIR environment variable. For example:

set COBDIR=%COBDIR%;C:\\Program Files\\Micro Focus\\Mainframe Express\\mfhco\\BIN

Recompile and run the program.