Working with sharepoint often involves a lots of digging into to get to the source of the problem i.e. read Event Viewer, Stack Traces, ULS logs, IIS logs, etc...
Once common error you might come across as a sharepoint developer is the "The Resource cannot be found" error.
Digging into the event viewer or uls logs does not give any clue on the actual error message.
While,breaking my head over this my team mate told me to have a look at the page source.
And there lies the actual error :)
Hats off to sharepoint again!!!!
