Greetings, I have a client who is attempting to run a 16bit application on MPS4 Standard edition on Windows 2003 Server. The application functioned well on XPa on Windows 2000 server. Now, in the new environment, the application starts, then immediately crashes and closes. No errors reported in event log, Dr. Watson, etc. I can;t find anything that will give me a clue to what is happening. I can tell you that the application runs perfectly fine when run from the console of the Citrix MPS server. It also runs fine through an RDP connection to the Citrix desktop. The problem seems to exist with ICA. Can anyone direct me to a great troubleshooting document with 16bit apps in ICA session or could anyone provide any advice on how I can get this application working or what the problems may be? Thanks Rob This message may contain confidential and/or privileged information. If you are not the intended recipient or authorized to receive this for the intended recipient, you must not use, copy, disclose or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by sending a reply e-mail and delete this message. Thank you for your cooperation.