I don't want SU Viewer installed, but I keep getting the following error whenever I start up 2015:
"SU Window Settings extension requires AMS Library! Download AMS Library, extract it into the Plugins folder, and then restart SketchUp. Click OK to proceed to the library's homepage."
There is no Plugins folder for 2015, and I have uninstalled SU Viewer from the extension warehouse.

How do I get rid of this error message?

Thank you,