>How to get the debugger to fire up when an error occurs in a compiled exe?
>Thanks!

As long as you run it from IDE
DEBUG opens the debuger
SUSPEND pauses
SET STEP ON does both

SET ASSERTS ON and a later ASSERT .f. (or ASSERT lExpression where lExpression returns .f. for that) suspends

if you do not run from IDE
none

in short terms
in your main.prg add function

FUNCTION On_Error
 SET STEP ON
 RETRY
ENDFUNC

in main add

ON ERROR On_Error

So the error should call the On_Error and you can singlestep back to the error.
Note, the example above only catches the error. Any information about the error given by all all the stuff like AERROR ERROR MESSAGE and so is up to you.
IOW simple catching and calling debugger is not enough.
See HELP ON ERROR for example.

Do not use this in code outside the IDE, any error will cause a loop.

HTH