Fixed an issue where IOExceptions were being thrown (and caught by the generic exception handler which spawned a new window) when in 'directory watcher' mode, when a file was being created.

ie, I'd save a file in photoshop, it'd create a stub file, markpad would throw exception, then photoshop would actually write to it.
Merge pull request #352 from Code52/IOExceptionAsBeingCreated

Fixed an issue where IOExceptions were being thrown