Issue with iphone sdk 4.2.1

Question

Probably a silly question. When running my project on the Device in the debug mode I get a lot of warnings al having the following string:

warning: Un

Answer 1

I had this issue with 4.2.1 (8C148a), which I believe is caused by differing DeviceSupport files on the phone and in XCode. I tried many things, but eventually resolved it by deleting this folder:

/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1 (8C148a)/

After this I plugged in my iOS device and was asked to connect and restore the symbol files from the device, and it worked normally again.