Hi, According to "Process Hacker" the mutex name is correct. On Mon, Oct 22, 2012 at 11:44 AM, Christophe Fergeau <cfergeau@xxxxxxxxxx> wrote: > On Mon, Oct 22, 2012 at 11:31:29AM +0200, Marc-André Lureau wrote: >> On Mon, Oct 22, 2012 at 9:47 AM, Christophe Fergeau <cfergeau@xxxxxxxxxx> wrote: >> > http://nsis.sourceforge.net/Allow_only_one_installer_instance also warns >> > against CreateMutexA when using a unicode nsis, have you checked the mutex >> > name or are you sure we are not using a unicode nsis? >> >> At least I have checked it works, so I assume there is no issue there. > > The page I linked to says things will always work, but that in the unicode > nsis/CreateMutexA case, the mutex will be named 'V' instead of the expected > 'VirtViewerMutex', so depending on what you checked, it may appear to be > working but be buggy. > > Christophe -- Marc-André Lureau