A family of Microsoft word processing software products for creating web, email, and print documents.
Thanks for your help!
Does the PDF/A-Option have some dependency? It should be easy for a developer to see what dependecies there are and how they could be corrupted.
May be some additional module are involved when using the PDF/A option. First, I'd test if this is a user account specific problem by creating another account and try to save a "PDF/A" file from there. If the same problem happens, you may try using some specialised tools like ProcMon to track background events.
One way to see what's happening behind is to use Process Monitor and track "winword.exe" process events.
Download Process Monitor:
http://technet.microsoft.com/en-us/sysinternals/bb896645.aspx
How to Use Process Monitor to Track Events and Generate a Log File:
http://www.winhelponline.com/blog/process-monitor-track-events-generate-log-file/
Upload the PML log file (zipped) online and provide us the link.