Hoping someone has run into this issue at some time. 2 Windows 2003 SP1 / PS4 servers With ICA client 9.0 (or 9.1) installed I can launch a desktop and run my application named fcab.exe. If I try to launch the app as a published application (as the same user) it will try to launch but never complete and log the user off. Same results as an admin or normal user. Filemon shows it runs through most of the files it normally does but then logs to Dr. Watson before failing to open. Of course I do not get much from the Watson log file. With ICA client 8.0 installed I can launch the app from a desktop or published app. A little background on fcab.exe is a document management app, that allows users to scan from twain devices. I fear the new Twain redirection feature of PS 4 may have something to do with it, but it works from a desktop so the logic isn't there. Even disabling Twain redirection via CMC policy doesn't help. I have followed CTX 107411 but nothing changed. Any ideas would be appreciated! Cheers! Kevin Kevin Phillips Web Services Engineer Thomson - Creative Solutions k.phillips@xxxxxxxxxxx <mailto:k.phillips@xxxxxxxxxxx>