Tools/Add-ins displays unable to read file

When I start excel 2003 SP2 with a blank workbook, and go Tools/Add-
ins... a message is displayed saying "Unable to read file." I
actually get this message three times in succession. After which the
Add-ins dialog is displayed as if nothing were wrong.

These messages only appear the first time I do Tools/Add-ins. After
that the dialog comes up without any messages.

All the addin files corresponding to the items in the addin list are
present on the hard drive.

Does anyone know what is causing this message?

Thanks,

Brian Murphy

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