If anyone has crash issues, give us a call here or in our TS.
If you unzip the zip into your bf2/mods folder, you should be ok.
important is that in your fh2 folder, you then have the files fht_if_objects_server.zip and fht_if_objects_client.zip. And the four maps fht_ai_* in your levels folder. Check if that is the case if you do crash.