Finally found th e reason for my problem:

The TEMP dir (%TEMP%) had too many files. I deleted files and all is working fine again.

Which leaves as question:

How can I automatically delete unnecessary files without "disturbing" programs that rely on one of that files?

TIA
Gerhard

>Hello,
>
>While trying to automate MS Word 2010 from within my VFP 9 app I get this message increasingly often.
>
> Title: Fox Engine DLL
> Text: Cannot create program workspace temp files.
>
>The error occures when creating new documents as well as when opening an existing document. And sometimes it just works.
>The code used is in the program for years now without any problems so far.
>
>I do have full access to the temp directory used and there are about 130 GByte free on the disk holding the temp dir.
>
>How can I prevent this error?
>
>TIA
>Gerhard