Ken Burns Crashes FCP X

I am currently on 10.0.7 of FCP X. I have noticed this bug since the last release, but not prior to that. This occurs on my MacBook Pro (2.2 GHz Intel Core i7 running MacOS 10.6.8) and also on my 11" MacBook Air.

Basically, a third of the time that I add in a Ken Burns effect, the program crashes as soon as I go to adjust the START/END boxes. The effect will still run as long as I don't touch the default positions of the boxes. Once this occurs, I can not edit KB on that image, no matter how many times I restart FCP or the computer.

This is a relatively new issue to me that hasn't gone away. I have seen a prior thread from a year ago on this topic (https://discussions.apple.com/thread/3707812) but the suggestions all point to a user file size issue which I don't think is the case here. It is clearly a FCP bug that perhaps the Mac application development folks don't see on the combination of hardware/OS that they are using.

Any thoughts on this? Does anyone else see this bug?

Thanks in advance for any tips,

-Todd