My Terminal server environment is
SERVER 2003 R2 STD Edition with Service Pack 2
it has these DOT NET Versions installed
Microsoft DOT NET 2.0 with Service Pack 2
Microsoft DOT NET 3.0 with Service Pack 2
Microsoft DOT NET 3.5 SP1
When I run Epsilon it tries to start shows the splash screen and then the error dialog Parameter is not Valid shows.
Adam Budicha (Agco Computer Systems Support Officer) suggested
Could you please go directly to server and login as Admin and remove current Epsilon and if possible restart your server and start setup again?
Could you please make sure that you have Service pack 1 for windows 2003 server and Microsoft .NET framework 2.0 if not download from Microsoft website?
I tried the above and still have the error.