Through our ePDM web portal, most things work fine but some files, when you attempt to open/checkout/get latest version, it will prompt with the follow error:

The details button shows:

Properties tab of problem file:

This file is not particularly burried in folders. It's only 2 folders down from the root.

Browser is IE9. OS is Win7 64 bit. Contributor user license.

Anyone ever experienced this error before and have a solution?

Thanks!