: Wrap your OLE calls in a TRY-CATCH block. Catching the OLERuntimeError exception allows you to inspect the "Description" property, which often provides more specific details about why the call failed.
: Use the Windows Command Prompt (as Administrator) to manually register necessary components using the regsvr32 command. Example: regsvr32 MSCOMCT2.ocx powerbuilder application execution error r0035
: In PowerBuilder, use the OLE Browser (found under Tools -> Browser -> OLE tab) to verify that the properties and functions you are calling actually exist in the registered object. Debugging with pbdebug : Wrap your OLE calls in a TRY-CATCH block