If you are ever having problems getting Visual Studio to break into your code and you develop by deploying your dll’s into the GAC, it’s probably down to mismatching PDB’s.
- Do a Clean Solution
- Rebuild the solution
- Re-Gac all your dll’s
- Reattach to IIS processes
Other hints
Locked files in the GAC
Some times a process will take a lock on an assembly and if, like me, you use WSPBuilder to re-gac your assemblies, you might not notice that it fails to re-gac them. Crack open process explorer, find the rogue process and “Get Some”. Usually Visual Studio is the culprit here.
Edward Wilde 