Error writing metadata

Hi,

I keep getting this erro message after every Description or Keyword entry. I'm adding PDF fiels from a remote server. I've re-started 3x, reset all of teh setting, purged cache, etc. I have permission to read/write from server. Only way I can get the data to stick is to open one of teh AI fiels & save a new PDF to my desktop, then add it to Bridge, add data, quit, relaunch & the data is saved. There's around 150-200 files that I would hate to go through saving out PDF's on all over again. Most of the PDF'a are less than 1MB.

Any help appreciated.