Could not load file or assembly Ice.Lib.AppSettingsHandler

2021-11-19 14_12_57-Wickam- Joshua (K4185) x605 - TeamViewer

One of my users is having trouble opening Pilot. I have tried several full reinstalls and copying over the offending DLL from a workstation with a functional installation. The client is updated and everyone else is able to log in to Pilot with no problem.

Any ideas? TIA!