Just a few more fixes that have popped up along the way, we've fixed a recursive NIB crash when running in Spanish as well as addressing another instance of the issue where the .graffle file extension would get appended on export.
The upshot to RC status is that once the final version of OmniGraffle 4.2.3 is out and about, is that version 5.0.1 can go into beta testing, it's currently busy waiting in the wings.
You can find the release candidate of OmniGraffle 4.2.3 at our beta page.
