Version Apps 10 update 20

We have a number of users experiencing this and similar errors when trying to access various screens in IFS. We have tried running the clean up scripts and deleting the contents of the 2.0 folder on their user profile but this has not resolved the issue. I have logged into IFS with their accounts on my PC and everything works correctly, but when I log onto their PC with my IFS account I also experience the same errors. Some of the errors include:

Ifs.Fnd.FndSystemException: Explorer: An Unhandled Exception has occurred ---> System.ArgumentException: Unknown form template class: tbwMaterialAlloc.

Ifs.Fnd.FndSystemException: Explorer: An Unhandled Exception has occurred ---> Ifs.Fnd.Explorer.Interfaces.FndFeatureNotFoundException: Navigation target i_hWndFrame is not to be found in the dictionary

The current work around is for users to connect to a terminal server and run IFS from there.

Has anyone else experienced this problem on screens including Shop Order > Materials tab, Active Work Orders RMB menu and Shop Floor Workbench and found a solution?

Thanks