I have a thinapp instance of Firefox 3.5.5 which for some reason fails to open anything from the download window. Meaning if I select a PDF online and tell it to open using adobe I get the following (this issue is not isolated to adobe however)
I have removed the users name so normally the empty space in the string contains that.
The locally installed instance of IE8 can open files just fine with the intended application. Both Firefox and Adobe are registered with the VM's using thinreg. The VM's are Windows XP SP3, all available updates have been applied. All applications were created using thinapp v4.0.3. Ultimately we can select to download the file and then navigate to the folder and open it from there but thats not really user friendly and I can't go to everyone with that as the solution.