I still just get black screen when trying to load event lvl 1... browser version, cash cleared & stuff

As for the skill CDs... well, i currently have lvl 50 boss on camp.2 hard mode on farm... gotta say i dont find ANY skill in the game that is actually worth using... EVEN Altheas heal is pretty much useless on harder maps as your weaker units basically die in 1 hit to anything while the tank (Eli, as it is the only tank capable of tanking) has about 4M health so healing her for 300k is a joke really. NONE of the damage skills is worth clicking on, in my experience... its much more important to micromanage your units and move them out of harms way and dont let them insta-die to an aoe