If you have visual studio setup correctly, when dolphin crashes you will be given the option of using VS's Just In Time debugger to debug the crash.
However, if you want to start debugging from VS, you should make sure the working directory for Debugging is set to $(TargetDir) in the Dolphin project's properties. (Dolphin is probably trying to scan a nonexistant folder for plugins in your case.)
However, if you want to start debugging from VS, you should make sure the working directory for Debugging is set to $(TargetDir) in the Dolphin project's properties. (Dolphin is probably trying to scan a nonexistant folder for plugins in your case.)