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

For some special cases you could get rid of this if you disable batch compilation in the Web.config file like this:

<system.web>
    ...
    <compilation debug="true" targetFramework="4.0" batch="false" />
    ...
</system.web>

After compiling, you can change the value back to True or remove the "batch" attribute, and then rebuild successfully.

Answer 2

The above solutions have worked for me in the past, but not this time.

I finally found the cause: one of those server side tags (like <%# Eval("Something") %> ) from the attribute of a control on the aspx page.

I'd added it shortly before the problem appeared, and removing it made the problem go away. It was in a TemplateField on a GridView.

Bizarre, but that's what did the trick.

Answer 3

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.

Answer 4

None of the solutions worked for me. The code that it is complaining about is this:

thisSession = ((SiteMasterPage)this.Master).foo;

I'm casting the page's generic master page to the specific master page which grants me access to the foo object on the page's master page which is a complex object with trivial user data.

If you want to know why I'm doing this, it's because so far it's the best solution. Requirements dictate that I cannot extend the page class, no session variables, or cookies, and it must be user specific data.

I don't have enough reputation to comment, so I have to reply in an answer. :(

Answer 5

Had this numerous times. The solution is to close and open Visual Studio.

In my case at least it seemed to hove something to do wit