I've been working on this problem for the last few days and it's driving me
nuts!
Everything was working fine until I recently applied a series of Critical
Updates from Microsoft.
These updates were:
KB842773
KB890859
KB893086
KB893066
KB890923
MS Windows Installer 3.1
Immediately after that update was complete, I began to get a pop up window,
with the header HOTSYNC.EXE, with this error:
The instruction at "0x0a93c0e0" referenced memory at "0x0a93c0e0" . The
memory could not be "read".
I then have to click OK to close the program. This happens everytime I try
to run the HotSync program.
I have determined that HOTSYNC.EXE does run in safe mode, so I think that
there is a conflict with the recent Windows Update that needs to be addressed.
I've run McAfee Virus Scan Enterprise, McAfee Stinger, Spybot,
SpywareBlaster, Microsoft AntiSpyware, and AdAware - everything is clean.
I've cleared my internet caches, history, and temporary files.
I've tried CCleaner and ShellExView to clean up the registry. None of these
measures have worked so far.
I just thought I'd try posting this to the board; I sent this as an email to
MS support but I'm hopeful that with more people seeing this, I might get
more input.

Thanks!