If you are using my Insert Video plugin and the latest Windows Live Writer Wave 3 beta, you will probably find that you are getting an error when trying to insert. This is a bug, but not with my plugin. The Live Writer team somehow managed to break the API that the plugin uses. This has been raised with them and they are now aware of the problem, so hopefully that should get fixed in the next release.
Apologies for any inconvenience this causes, but ‘twas not me guv’nor 😉