My app runs fine in the simulator, but when I build and run it on the device (iphone) all I get is a black screen. Any known culprits for why this happens? All code files are in the root directory.

filenames are case sensitive

are images in 32 bit format? png/jpg

Foo.png on code is not the same as the filename foo.png on device.

cases must match.

Foo.PNG is not the same as Foo.png on device.

on simulator is ok. but not on device.

.c

{edit} carlos beat me to it by one minute. lol

Ya what carlos said, its most likely your culprit.

GoodLuck