Hi there, Google and searching some citrix forums didn't help me so solve this strange problem. Situation: Test environment PS4 (with all rollup packs and last hotfix installed) on W2K3 server (up to date). 3 servers cloned with Acronis, no strange error messages in eventvwr. Desktop and 2 applications not load balanced published (notepad / Navision). Using last citrix client 9.20. Policy's and flex framework installed and configured (working fine). Problem: RDP works fine, Desktop via ICA works fine. After starting a published application and the credentials are given in the profile is loaded and scripts are running fine. After 10 seconds I receive the message that the application failed to start. After 30 seconds the log-off script are running and the cached profile is delete. I also read the citrix technotes about troubleshooting login problems (ctx104708 / ctx 106250). I'm (almost) sure that it has to do something with cmstart.exe or icast.exe (see ctx106250 / point 6). Does anybody know how I can debug this part of the login-proces? The debug information of userint.exe looks good. Thanks in advance! Grtz, Michel