I recently installed the CTP of SharePoint Workspace 2010. All was fine until I came across something I hadn't seen before. When ever I would go to a SharePoint site and try to Upload Multiple Files, I would be presented with a "Drag Files Here" window. So being curious, I tried dragging and dropping a file here. When I click OK, it would try to upload the file to my document library, but would fail.
After doing some research (there were no results for "Drag Files Here" and "SharePoint" at both Bing and Google), I decided that it must be due to SharePoint Workspace 2010 being installed. I removed that and rebooted. Upon reboot, the screen below still came up, but instead of the ActiveX box to drop the files into, I just had a Red X, as in it was unable to load that element of the page.
To fix this and return to the default Windows explorer-esque 'Upload Multiple Documents' file tree, I had to run a repair on Office 2007.






