Hello Peter
I have spent some time on this with a friend, and have partially solved the
issue.
I had the same issue with ID, PS, and Ai, and was solved in the end by
simply going into the preferences and creating the scratch, page, or
recovery file in an alternative drive.
The Adobe applications was creating these files in the highest level of C
Drive, which windows really doesn't like.
Because these temporary files are writing to folders, every time I start
these graphic programmes, the error message asking if it is OK for the
programme to make changes to the system comes up. It's a nuisance, but I
can live with it.
This issue does need some work, particularly as, for example, my C Drive is
a 250Gb flash drive which is not ideal for temp files that are constantly
being written and deleted.
I hope this helps, I'm a technical moron, and cannot give you a step by
step process to follow.
Many thanks for your help.
John