i had to reload the previous version of sketchup prior to the "trimble" update. All the scripts etc are working fine again now. Thanks for the suggestions

i have checked the extensions and they are no longer in there either

I loaded the new update to sketchup 8 this evening only to find that the ruby scripts and the plugin i use have been removed along with the sandbox where they were located. The plugins are still in the plug in folder but they aren't in the latest version of sketchup. Has anyone any ideas or have they experienced the same issue.