The Remote Desktop administrator software failed to start due to an unexpected error...

Hi all...
Suddenly, I'm getting this error message when I try to open ARD. It was working a week ago and I'm not aware of changing anything. Any advice?
This is the 3.6.1 version of the ARD admin and I have the 3.6.2 Client installed (that was the way it was before, too, when it was working).
Note: I did try a fix from the forums that was posted in 2009, which required deleting the ARDAgent from the RemoteManagement folder in System/Core Services... and then reinstalling again using the Apple ARD Admin download for same. It worked for one run of the program, then the error came back.
What do you guys think?

bcvanbelle wrote:
Updated from 10.5.1 to 10.5.2. System seemed slow at first, noticeable keyboard lag and otherwise sluggish. Noticed that Remote Desktop no longer worked. Installed Graphics update. No more typing lag and speedier performance. Remote Desktop still dead.
Error message:
The Remote Desktop Administrator software failed to start due an unexpected error.
You may have to reinstall the Remote Desktop SW. See if that helps.
I don't think it's a coincidence that this update "fixed" the Remote Desktop SUID warning, and it also removed the potential update from my computer which I had placed on "Ignore" since I did not need it and did not need the warning, either. So there is a connection between this update and the Remote Desktop SW.

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