I got this error during slipstream:

AutoIT Error

Line 0 (File "H:\XPCD\DPs_BASE.exe")
$outputfile = stringTrimRight($f_in, stringLen($f_in_ext)) & $f_out_ext
$outputfile = stringTrimRight($f_in, stringLen($f_in_ext)) & ^ERROR

ERROR: Variable used without being declared