I'm getting error "The type or namespace name 'CS' could not be found in the global namespace (are you missing an assembly reference?)"

I'm using component for cropping images. If I added to website it works fine. When I add it to web application project, I'm not able to compile it, getting the error below. Dl开发者_C百科l in bin folder, and I added reference to this DLL

Error   21  The type or namespace name 'CS' could not be found in the global namespace (are you missing an assembly reference?) E:\Site\CropImagePage.aspx.designer.cs  148 27  SiteName

Any idea what the reason why it's not compiling?

This error is occurring right now in your .designer.cs. I suspect you've got an out of date .designer.

• delete your CropImagePage.aspx.designer.cs . Don't worry, we'll get it back.
• build/run your site; this could eliminate the error.
• if you want it back, right click on CropImagePage.aspx, and select command 'Convert To Web Application'. This will recreate the .designer.cs.