I just reinstalled FMS 5.5. I noticed that it's installed at /.
The update ran perfectly. It may be that the updater is looking for the FMS folder there, and not in /Applications.
Good Luck,
Chris Drosos
Jroths,
I haven't. I received the same error message under 10.2.6 Server, and I just updated to 10.2.8 Server. Hopefully it will work now.
I also ran Disk Utility to repair permissions, and I also attempted to patch as root.