Problem N* 1 -  I downloaded ELS watching kane jr's video and did everything right step by step, tried it out it worked fine but the next day the CTRL P menu wont open and when i press E the sirens dont work. might be related to the problem below

 

Problem N* 2 - I downloaded a car pack and installed the marked charger, its drives/looks just fine, apart from the lights and sirens do not work. Yes i dragged the VCF File into ELS>Pack Default

                                HERE IS THE CAR PACK I DOWNLOADED

 

not sure if you have figured this out or if someone has helped you. Have you/ did you check to see if you had els locked or key locked? I believe its the scroll lock key on your keyboard and have personally done this myself a couple times and didn't realize it for awhile what the problem was and was so frustrated. I believe at the start of game it will say els locked in small red text in bottom right of your screen