I don't think "upload.exe" will tolerate spaces and quotes. Logoedit.exe deliberately changes the name to a short filename before passing it on to upload.exe.

Well... All I know is that it didn't work before, and after I put the quotes around the %1 in the file association, it worked.. As I always do the 'open file' option in IE, and have never had any problems (am pretty sure it throws it into the Temporary Internet Files directory, and the filename is definately longer than 8 characters) I am pretty confident that things are being taken care of.. *shrug*