cant find file?

I uploaded http://www.mymrt.net/trigASP3/cos.aspx and the file cant be found.


Let me explain. I have an asp.net website in VS2008.
In the app_code folder I have class files.

It all works fine no problem on my PC so there is no issue on my PC.

I uploaded the whole website to my host and I get a file not found due to the code behind using a  class file
I take away the class file refernce from the code behind and it works.




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