So I having problems installing an ad-hoc distribution app on an ipad 1 with ios 5. I don't have this problem when installing in other ipads... here the console log after failing installation:
Mar 16 19:09:58 iPad SpringBoard[635] : Killing com.myapp.ipad for app installation
Mar 16 19:10:03 iPad ReportCrash[743] : Formulating crash report for process installd[739]
Mar 16 19:10:03 iPad com.apple.itunesstored[736] : receive_message: failure running async function: 1
Mar 16 19:10:03 iPad com.apple.itunesstored[736] : call_and_response: Could not receive response from proxy
Mar 16 19:10:03 iPad com.apple.itunesstored[736] : MobileInstallationInstall: failed with -1
Mar 16 19:10:04 iPad ReportCrash[743] : Saved crashreport to /var/mobile/Library/Logs/CrashReporter/installd_2014-03-16-191003_iPad.plist using uid: 0 gid: 0, synthetic_euid: 501 egid: 0
Mar 16 19:10:04 iPad com.apple.launchd[1] (com.apple.mobile.installd[739]) : (com.apple.mobile.installd) Job appears to have crashed: Segmentation fault: 11