Can't get Pixelmon to start. Press play and nothing happens

Great! PIxelmon is an amazing mod.

I fixed it by re-downloading and running forge and then adding the mods. Thanks.

Yeah your forge client failed to download it's libraries as you can read in the crash log.

Remove pixelmon.zip from your mods folder and load your forge 965 profile first.

you can also try using Technic launcher. i know how you feel with something going wrong downloading mods, the last time i tried it crashed my entire computor i was lucky enough to get it back up and running. but check out technic. you can download the launcher and free mod packs . i got a pixelmon pack xD i quite enjoy it and it has FML with it. (that way i cant screw up the main computor and get in trouble) but if you prefer installing by hand look for a youtube video on installing mods and such. some are quite helpful in giving a detailed looks at what to do

It failed to download some important stuff. You might have installed Forge the wrong way.

Try deleting Forge and the mods in your mod folder and install Forge again, but make sure you follow all the steps this time:

Dowload Forge, Start the launcher, Run the Forge profile that has been created (without any files in the mod folder!), close the game, put the mod files into your mod folder, start the launcher and play on the forge profile again. Should be good now.

(I know redownloading is the most basic solution ever, but when you install Forge it needs to download some stuff first before you can play and it's trying to do that, but it can't because it's already running a mod)