if the .NET Framework is not installed on the server, the application wouldn't run at all (AFAIK). Perhaps some UI Component is not fully supported on a particular OS? (it can happen but do not quote me)
what OS is this server you are running the application on?
how are you deploying it?
As suggested, if you can, post the stack trace - would give us more help (hopefully) ![]()
Winforms?
Err.Number and Err.Description are not VB.Net errors
They are VBA, VB, or VB.Script style errors I believe.
So this error is probably comming from a VB based Com object that the application is attempting to initialize.
Thats my guess anyway.
Ibrahim