We hav a user that crashes the CTXtwnPA.exe when scanning. On the user side it is Windows 7(64bit) and an Epson GT-s50 scanner. I have installed everything thing from version 10 up to the latest receiver on her machine. On the server side we are using XenApp 4.5 on WIndows 2003 x64. I initially started with uninstalling and re-installing both the scanner drivers And the citrix client, and tried multiple versions. All got the same result. I finally had her create a new windows profile on her local machine and the scanning started working. I have been trying to determine what is different between the two profiles to determine what is causing the crash but haven't been able too. I took snapshots of the processes running at the time she did the scan from both profiles and looked at what was different. Then on her original profile I killed those processes that were different and had her try again and it still crashed. When she initiates a scan from inside our software the scan starts, the pages pull through the scanner and then the CTXtwnPA crashes when the images start to transfer. While she does have local admin rights and could setup a new local profile, her existing one is also a network profile and logs into the customer's network. I do not have the rights to change that so she is currently using the test profile for her scanning and then going back to the other one for everything else. I have no idea where else to look right now to correct this so she can scan in her original profile.