Algodoo

I'm guessing that your New Scene folder became corrupt and is now pointing to some on-line folder such as Algobox. I suggest that you do a RESET to factory settings. In order to do that, you need to have Algodoo launched, then select the little white gear that's next to the File tab. When the Settings pane shows, you then click on the Reset tab and follow directions. That should fix your problem. If you are not able to launch Algodoo at all, then download a fresh, uncorrupted version of the app from the Algodoo website.

Thanks:)

YW