I believe this was a problem with the phantom hotfix. Under HKLM\software\microsoft\windowsnt\currentversion\hotfix There was a phantom hotfix something like 169222 (I know it ended in 222) that you had to remove from the registry after installing the q269214 hotfix. When this was the case I believe you could run tsadmin but not mfadmin. Chris -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Jennifer Hooper Sent: Wednesday, March 30, 2005 2:08 PM To: 'thin@xxxxxxxxxxxxx' Subject: [THIN] Strange old problem I know this is probably going to be a shot in the dark, but it's worth it. :) I'm wondering if someone can help me out. I have 2 NT4 Terminal Server Edition, SP6 running Metaframe 1.8 SP2 over in the UK. I don't know too much about these servers, except that they are quite old and decrepit, and we are beginning to experience problems. We have been able to solve most of them, but the strangest one is that every time I try to open the Citrix Server Administration application, it crashes. It says it's generating a Dr. Watson, but no error ever forms. There's no associated error message, it just says <error>. Has anyone out there seen this? We can't reinstall the software, as we no longer have 1.8 on CD, and we don't know where the licenses are for these older machines, either. Unfortunately, I have to get them limping along as I argue my way through our Applications department that we really do need Citrix and need to upgrade it NOW, or else. So if anyone has any pointers for me on where to look to solve this problem, I'd really appreciate it! Thanks so much! Jennifer Jennifer Hooper Peregrine Systems, Inc. Sr. Network Engineer mailto:jennifer.hooper@xxxxxxxxxxxxx <mailto:jennifer.hooper@xxxxxxxxxxxxx>