I am struggling with the same problem.
ZA works fine with the Administrator where I installed ZA, but fails with the same error message.
I have now tracked down the problem, and it seems that the problem is due to read protection on the files and subdirectories of
ZLClient is trying to read from there and fails.
Hope this helps to resolve this issue with the next release.
Operating System:Windows XP Home Edition
Product Name:ZoneAlarm Pro