I use multiple PC's with OOo and I've shared my docs in a network for all PC's on a central, external hard disk. But... when I try to open OOo-docs from the external HD, I only see the Writer startupscreen for a few moments and then the whole program is gone..

I don't have this problem by opening local files... It's possible to open the files in an opened Writer, but saving is impossible: I get an import-export error..
Any ideas for fixing this problem?