10.0.1 vignette bug

10.0.1 seems incredibly unstable and buggy, I thought it was meant to resolve these issues?

One big problem I'm having is that I've applied a vignette effect to a clip on the secondary timeline. Now any time I go near this clip, FCPX crashes. This has obviously rendered the project entirely unusable, which is a big problem, particularly if 10.0.2 doesn't come along for a few more months.

I tried opening an old project which shouldn't have the new file in it and therefore shouldn't be a problem but despite being a day older and therefore unable to have this new file, the old project is identical when you open it up in FCP, so potentially something going on there as well?

I'm running a brand new macbook pro i7 in lion, so the issue won't be a lack of graphics support.