Error of app close main!During start up you can fix the app close main error.

1) Open your filemanager/explore/xplore.

2) Go to C:/system/bootdata & delete FirstBoot.dat

3) Turn off phone & take out your mmc.

4) Turn on phone and put in current time/date.

5) Wait for it to boot up then turn off phone again.

6) Put mmc back in and turn on phone.

"Enjoy it"