Install error failed to open product's delivery key

[D]

I can not get Office 2003 to reinstall on PCs. MOLP edition, clients Win XP
It has worked in the past but now it fails for no good reason I can see..

Error 0x80070002
failed to open product's delivery key
Reading from
"M:\Software\Restricted\office2003promolp\FILES\SETUP\SETUP.INI":
"Cache\CDCache" (Default: 0)

I have setup the install point with CIW and put in the product key in there
so it is not need in the setup.ini file. I have recheck the setup by going
through the CIW again.

If I change the product key in the file it says
The language of this installation package is not supported by your system.
Error 0x80004005
LCID check failed

Mystery as to why this has just started..
Any one got any cluess please...
thanks