Gibbed's Mass Effect 3 Audio Extractor: "IO.Path.Combine path1 cannot be null"

To fix this, use regedit to go to

• HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\BioWare\\Mass Effect 3 (on 64 bit machines)
• HKEY_LOCAL_MACHINE\\SOFTWARE\\BioWare\\Mass Effect 3 (on 32 bit machines)

Add a new registry entry (right click -> "New" -> "String Value"). Name it "Install Dir". Set the value to your installation directory (the same value as the "Path" registry entry). Close regedit. Re-open Gibbed's Mass Effect 3 Audio Extractor.