Hello, here is what I found : I made a fresh install of Ubuntu 9.10 in November, and in the Wine registry, some file types were pre-associated with winebrowser %1 (without the quotes around %1) thus preventing them to work. I found only yesterday that I needed to add the quotes. Now I can launch any file from any Wine application, and that call my linux-associated application. I don't know if I was a special case, or if many users were impacted, so I post it here. Best regards, Hunirio