Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Ubisoft\Far Cry 3] "InstallDir"="D:\Games\Steam\steamapps\common\Far Cry 3\" "Language"="English"

It looks like your search query got cut off. Based on the fragment , you're likely encountering a known error when trying to launch the Far Cry 3 Map Editor on PC.