Crash #707301

hello, my sketchup dates all the time it gives me this error, Crash #707301, could someone help me to correct it?

You have several interesting extensions. Can you check for whether there have been updates for them? For example, it looks like you are using Fredo6 extensions that are out of date, and Solid Inspector that is a few versions out of date.

The crash seems to happen while undo actions are taking place. Do any of your extensions add features to undo?