With XP_SP2_EN I got an error free build.
The MakeISO did not work (I have spaces in my names).
I changed to
ShellExecute,Open,"#$q%Tools%\mkisofs.exe#$q","-iso-level 4 -volid %pTextBox1% -b bootsect.bin -force-uppercase -no-emul-boot -boot-load-size 4 -hide bootsect.bin -hide boot.catalog -o #$q%IsoFile%#$q #$q%TargetDir%#$q"
and could build the ISO.
Started ISO under VMWAre and got an error free boot.
Had Internet connection.
Tested some MMC programs: Came up and showed senceful things.
After that I tried XPP_SP2_German as source:
20 build errors:
The IniWrites might be a 'Read-Only' issue.
But the *res in non-english languages have different names and are in standard XP setup renamed when copied.
During boot there was a warning:
and finally the boot hang with
Result: The script is only suited for English source.
Peter