"Ambiguous match found."

[volkan]

I can't sort out this problem is there anyone have any idea?
Application is working in my computer but when I upload it to the server.
It gives an error message.
"Ambiguous match found."

[eUKhost.com]

I would like to know what exactly you are trying to run and if possible give us step by step information. We can sort the problem for you only if we can understand what you are trying to run.

[Rock]

Hello Volkan,

Check it now. The pages are written in c# language while the web.config is set to run vb.

After setting it correctly, now the error for me has changed to :
Parser Error Message: The file '/comment/MasterMain.master' does not exist.

I can't find the /comment/MasterMain.master file there.