CD2

Delete UnitedCallouts, in fact delete your plugins one by one,
update AssortedCallouts.
 
These plugins needs to be updated (AssortedCallouts is), you should of known that since it's a new a update with API changes.

Damn. I dont know what to say... maybe try using the previous version of RageHook? If its even still available to download...

Try disabling your antivirus

When using the ELS mod everything works except for the fact that the only light that actually light up properly are the tail lights. The headlights dont flash when they should and non of the light bars work. I have re-installed the mod and tested on other vehicles but it didnt change anything.

It's called ELS V, but it's slated for months more of development. 

There is the mod that turns one of the LSPD Stations into a SAHP station. No interior, though.