ASP.NET Page says I need to reference an assembly that does not exist!

Question

My asp.net site has to run on several client servers. It\'s working fine on a majority of them, but a couple have run into an error message on a few pages:

Answer 1

Attempt 1:

A similar question was asked a couple of months back and look at those answers.

Attempt 2:

Have you cleared the "Temporary ASP.Net Files" for the site, usually found at C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files? There may be an old copy lingering around.