Rootfly installs into a new WinXP bottle without a problem, but it does not run unless you install the Microsoft Visual C++6.0 redistributable. I also have the Visual Basic 6 service pack 6 runtime in the same bottle. I don't think the latter is necessary, but you could try that as well if you have a problem. once the redistributable is installed it works perfectly. I haven't yet found any glitches.