Problem with Asset Editor - The parameter is incorrect!

Hello, can you please help me I am getting always this error message when I try to use the Asset Editor = "Parameter is incorrect"
I am running Railworks Version 117.3a (.NET 2.0)
I have checked my file, the path...everything it looks correct.
I sent my files to a friend of mine that has Railworks same version and it works fine on his PC.
Anyone has any idea?
Thank you!
Frank Di Candia
I am running Railworks Version 117.3a (.NET 2.0)
I have checked my file, the path...everything it looks correct.
I sent my files to a friend of mine that has Railworks same version and it works fine on his PC.
Anyone has any idea?
Thank you!
Frank Di Candia