A minor glitch is that it installs two copies of the lyx executable, one named lyx-1.5.0svn.exe and the other lyx-qt3-1.5.0svn.exe. If you think this is necessary, a symlink maybe in order here.
That is right now intentional, since I would like to keep both lyx-qt3 and lyx-qt4 executables for comparison and other purposes. I will try to make lyx.exe a symbolic link to lyx-qt3 or lyx-qt4 later. The patch is going in. Bo