Hi Michel,

>>>How can we avoid those unknown references when compiling the sub EXEs? We are getting "Unknown MYPROC - Undefined". This is requiring us to press Ignore when compiling.
>
>Now, that I put EXTERNAL PROCEDURE for all those functions, I get:
>
>Proc./Func. MyProc - Undefined

You can try to add this command to your project

SET PROCEDURE TO xyz.exe ADDITIVE

Regards

Franz