File time stamps not being set

I’m getting consistent failures with File.setCreationTime, setLastModificationTime and setLastAccessTime on directories on a removable drive (not sure if that’s related). They always return false and no change is made. I can successfully change them via Windows Powershell. Is there a known issue with this in Juce 1.5?

Haven’t heard of any such problems before, and it just uses the standard win32 calls to set the time… Maybe something to do with the filesystem on the drive, but I can’t think how it’d be possible to change it and make it work.