Thanks David. I stand corrected.
After getting the original error message when trying to "open with..." I
was misguided by the error message that I receive when I double click on
the failed file (in the Firefox Downloads window): "/tmp/filename could
not be saved, because you cannot change the con
I'm having this problem too (Ubuntu 10.04 / Firefox 3.6.8)
My suspicion is that it's caused by Firefox trying to save anything that
you "open with' in the temp folder (as it does in Windows). In Ubuntu
the user does not have write permissions to the temp folder (/tmp).
I thought this may be easy
