I installed ifolder 3.8 client on a new windows 7 home 64-bit pc and it worked fine until I ran windows up date.
Now I get a "Novell ifolder core has stopped working" message when ifolder tries to start.
I get the following information in the problem details.

At this point, ifolderapp.exe is running, but simias.exe is not.
It looks like simias is crashing when it starts.

I have removed and reinstalled the ifolder client at least three times, and the same result occurs.

This looks very similar to the problem reported earlier with XP SP3

Description:
Stopped working

Problem signature:
Problem Event Name: CLR20r3
Problem Signature 01: simias.exe
Problem Signature 02: 3.8.0.0
Problem Signature 03: 4ac4287b
Problem Signature 04: System.Web.Services
Problem Signature 05: 2.0.0.0
Problem Signature 06: 4a275f0d
Problem Signature 07: 276
Problem Signature 08: 42
Problem Signature 09: System.InvalidOperationException
OS Version: 6.1.7600.2.0.0.768.3
Locale ID: 1033
-jt