Well, sometimes logcat doesn't have much useful info.. Seems like there is some issue with disk index (whatever this means). Does this happen on other devices? Maybe there's some problem with your phone.
You can try exporting debug APK, it may give you more detailed error logging.
Also, you can add Browser Log messages into all key events in the project, for example "Checking Local Storage", "Loading from Local Storage" etc. If you export debug APK, you will be able to see these messages in logcat and will know exactly in which event your app fails.