Minecraft PE0.9.4 won't run on iOS

Sorry but I can't seem to be able to report a Pocket Edition bug...it is going into the PC section.

I was running PE 0.9.2 and started to get problems; world wouldn't load properly when I died/ respawned, I updated to 0.9.4 in the hope it would resolve this; however, now when I try to open MCPE it goes to a black screen like it is going to load, then crashes back to my 'desktop' as it were.

Can't seem to find others reporting this bug...