Adam,
I tried your suggestion but it does not work. Note that I am using DNN 4.0.2 which is an ASP.NET 2.0 environment.
Here is the test that I did.
1. Rename the ICSharpCode.SharpZipLib.dll in the bin directory.
2. Log into the website.
3. Open the File Manager.
4. Upload a zip file and check the auto unzip checkbox.
5. Check to make sure that the unzipped files and the zip file are uploaded properly.
6. Go to a page in the website.
7. Choose Edit Text on a module.
8. Click on the hyperlink editor button.
9. Exception thrown.
As stated earlier, if I rename the SharpZipLib.dll instead, the cute editor works fine but the DNN File Manager throws exceptions.
Thoughts?