Kepler

I think this needs to be fixed or removed for release.

To reproduce (on Ubuntu running Kepler from Chad's latest installer at least):
1)Open ApplicationFramework/CredentialRetrieve.xml.
2)Run.
3)Click cancel on the login dialog box.

Problems:
1) workflow continues to execute without stopping
2) If you try to open any other Kepler workflows, the Kepler Open dialog box appearance has changed; it now looks like the CredentialRetrieve password dialog box.