detecting girder install directory from setup

[birty]

in gider 3 the girder directory could be found from HKEY_LOCAL_MACHINE\SOFTWARE\girder3\Executable
but in girder 4 i cant find a similar entry, where can i get the directory from?

[Ron]

Added

HKLM\software\Promixis\Girder\4\Executable

[birty]

here is a NSIS script for a plugin installer which uses the above registry key to find the directory