Steps:
1. Uninstall all Appsync Cydia Apps even iOS 7.x Appsync
2. Reboot your iDevice
3. Delete these 2 files : "com.apple.mobile.installation.plist" , "com.apple.LaunchServices-045.csstore" where are located in var/mobile/library/caches
P.S: If "com.apple.LaunchServices-045.csstore" file is not available, it's OK!
4. Reboot (It is normal if some of your apps/folders are not available after the reboot, they will come back after steps)
5. Install iOS 7.x Appsync
6. Reboot
7. FINISH! Your apps should come back now!
