Am evaluating NU 15 and have discovered that running various "cleaners" that are part of NU causes problems.
System Vista, 32 bit.
After running NU Microsoft Streets & Trips reported problems with Registry being changed. I had to do full re-install of MS Streets & Trips 2011. Existing shortcuts still did not work so had to delete them and create new shortcuts.
After running NU Garmin MapSource can no longer switch and start Google Earth. Error message says I need to find the .msi file and re-install Google Earth. BUT I can start Google earth directly.