Dr. Watson error when saving in Excel 97 on NT4

[stevendo]

When trying to save a new file in Excel 97 on an AT4 system I get a Dr. Watson error. When saving an already created file things go along with any hitches. Other NT4 systems here have had Dr. Watson errors with IE5, but we fixed that by updating McAfee Definitions and the engine. I tried that for this problem, but without success. On this system, only the user has problems, the administrator can save new spreadsheets fine. The error message we get states the following:
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An application error has occured and an application error log is being generated.

EXCEL.exe
Exception: access violation (0xc0000005), Address: 0x300a3d32
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Please give any advice that you can. HELP!!!
thanx in advance,
Steven