welcome on board.
check the info why it wont run by changing:
shell "%COMSPEC% /E:1024 /C @LDRIVE\createprf.exe $fullname -Mailbox=emailserver\@userid -default"

to
shell "%COMSPEC% /E:1024 /K @LDRIVE\createprf.exe $fullname -Mailbox=emailserver\@userid -default"

cheers,
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