Yep, the workaround for this is in the devforums at:
https://devforums.apple.com/message/1114618#1114618.
Warning, back up first! Then, enter:
Code:
sudo mv /System/Library/Frameworks/Foundation.framework/Versions/C/XPCServices/LookupViewService.xpc/Contents/Resources/LookupViewService.storyboardc ~/Desktop
in the Terminal
Basically move the compiled storyboard referenced in the crash report out of the original place. No need to restart. Again, you will want to backup first and then I would, before applying the next beta or release, move it back to the original location and then update.