The new version of Safed 1.6.7 comes with a new system administrator discovery executable based on .Net. This version is compatible with old version configurations ( < 1.6.5).
Pay attention, the 1.6.6 version that came few days ago had had the same feature but when upgrading an old installation, the system admnistrator discovery configuration of Safed is interpreted wrongly inverting the VBS and C++ executable.