I'm probably gonna regret taking the plunge to iOS SDK 5.0, but wondered if anyone out there knows how to modify my Xcode project back to iOS SDK 4.3, but if not how to address the following issues with Base iOS SDK 5.0: BT_mapAnnotation.h LLVM GCC 4.2 Warning Property 'subtitle' 'copy' attribute does not match protocol 'MKAnnotation' property in BT_Objects/BT_mapAnnotation.h Property 'title' 'copy' attribute does not match protocol 'MKAnnotation' property in BT_Objects/BT_mapAnnotation.h BT_screen_map.m Semantic Issue 'BT_mapAnnotation' may not respond to 'initWithCoordinate:' Hope this makes sense to somebody :-)

I think you can change back to 4.3 by selecting your project in the navigator in xcode and then under Build Settings, select iOS 4.3. I've never had to change back from 5.0 though.

Hi Doncaster. I just had the same errors - have you had any joy solving the issues?

I have but your not going to like it. I had to uninstall Xcode 4.3 and use a Mac clean up utility to ensure all associated frameworks were deleted, then download and re-install Xcode 4.2, it was a pain but everything is working correctly now.

Thanks- I sorted it another easier way. I posted another forum topic and got a reply: Simply do hard reset on your iPhone running iOS 5.0 and then it all seems to run fine!! I do get warning- 4 regarding maps/locations but my app doesn't need them and works just fine despite the warnings! Warnings ok, issues would be another thing altogether!