Question : Error message: Entering break mode failed, Source file does not belong to the project being debuugged.

I have the following error when trying to Rebuild the solution. I dont have a clue what the cause of this was. The source file did indeed belong to the project, and I did a clean and rebuild just before getting this.
Please give me some suggestions.

Answer : Error message: Entering break mode failed, Source file does not belong to the project being debuugged.

Did the project move to a different location?  Check to be sure your references are pointing to the right path.