You have to edit the unit.xml for the ambualnce. Open it and remove the defaultcount line from below the FF_PARAMEDIC_STRETCHER and change the defaultcount of the FF_PARAMEDIC to 2. You will have to do this twice. Once for Campaign and once for freeplay. EDIT: I just realised you want to change the staffing at the start of freeplay. I think you will have to edit some different files for this. I'm not sure which ones though.
I think someone else reported the same problem with the LAPD negotiator. I haven't had that event yet so I'll see if it is the same for me when I get that event. There isn't any way around it either.
I said I don't think that it's a problem with the map. I didn't say anything about other things in the mod causing problems. I was just saying that I got the traffic light problem on the deluxe map as well.
I don't think the traffic light problem is anything to do with the LA Mod map. I was playing the LA Mod on the original deluxe map and had the same problem. The traffic lights stayed red. On the other side of the road there was a vehicle fire so the traffic was stopped and the traffic lights that were red didn't change until I had moved the car from the other side of the road.
If you have deluxe then I guess you will get HAZMAT events and all the deluxe events. You won't get them if you have the normal version of the game though.
You just need to make sure that the people you want to play with have exactly the same files. If they have edited one of the files then you will get that error.
A lot of people are currently working on mods. Hoghead47, the best thing to do at the moment is to start making models yourself and wait until some of the current WIP mods get finished and more people might help you.