I have a user control "shortcuts" on a page and wanted to copy it to get a similar function.

I copied the shortcuts.ascx and .cs-file --> changed some names (to avoid duplicates) and style classes --> compiled and it worked as intended in my test environment.

On production server, however, I get an error message referring to the Temporary ASP.NET files:
"...is defined in multiple places using definition from C:\WINDOWS\Microsoft.NET\......\Temporary ASP.NET Files"

I read somewhere I should shut down the IIS and delete all files in Temporary ASP.NET Files folder - and then restart IIS.

I am an amateur at this, so I'm a bit worried - can this cause any trouble with my website? Why does this problem occur, is there possibly something wrong with my code even though it compiles and works in my test environment?