https://issues.dlang.org/show_bug.cgi?id=15456
--- Comment #4 from Brad Anderson <[email protected]> --- Added Rainer and Martin on the CC. Assuming it's the same bug you hit, it seems you can reproduce by going through the uninstaller and installer as quickly as possible. The uninstaller "finishes" almost instantly once it gets to the RMDir /r part which makes me think it's doing the deletions asynchronously and the new files being added by the installer are subject to the delete. Very ugly bug. One quick fix might be to rename the C:\D folder prior to deleting it. I'm unfortunately too busy at the moment to try to fix this myself but might be able to look in a couple weeks. --
