Bundle errors should alert the user

[jthrilly]

A user encountered an error while saving that provided no user feedback:

In this particular case, the EPERM should be a specifically handled error message that tells the user that the file could not be written due to a permissions error, and tells them what they can do. What they can do is (1) Check that the file is not "read only", (2) Delete or rename the file and see if architect can recreate it