Okay.
I did it, and it didn't give me the is_dir error.
But still when I press "Upload files" nothing happens.
The same on insert flash, and insert media. When I press "Upload files" absolutely nothing happens.
I tried different tempfolders, and also the exact "/mytempfolder", but not much happened... tried also with an / at the end, but no result...
??? odd...
Raf