Parser Error Message: Ambiguous match found.

This error was being received after converting a project from .NET 1.1 to 3.5.
The issue is most likely due to two variable names in code behind differing only by case.

Here are two links for further research if needed:
Peter Johnson's blog (real name??)
Eran Sandler's post.

Assembly's manifest definition does not match the assembly reference

This error can occur if an attempt is made to reference a different version of a .dll and the previous .dll is being imported during compilation.

To fix this issue:

• Bring up the properties of the project having the problem
• Click on the "Reference Paths" tab
• Verify that the reference path defined is the actual path of the .dll that should be referenced.