Sorry about falling out of the loop on this... I got distracted... probably never happens to any of you.
@MichaelMcDonald since the Tester.csv file was NOT created, it appears to me that for whatever reason, your call to your perform script is not being found and that is the error 12 we are getting .... this is supported by the last error message in your screen shot where Program is blank and line number is 64999
If you are still working on this, click 'Debug' and type
Print lwd
It should print the path, something like 'V:\Apps\Acct\Version4\Mas90\Soa' ... whatever is appropriate for you
type
cwdir ""../perform_logic""
print lwd
your path should be in your perform_logic folder at this point.
if it is, then type
call ""export_hdr_test.pl"" and check your files for headers.