建议对于未来的版本，包括Crashlytics / Crittercism等，以获得即时崩溃报告。你最不想要的是等待36-72小时来获取iTunes崩溃日志。

iOS App goes crash on startup. After updating from the app store.

Few customer complained that my live iOS app goes crash while they update from old to new. I don't have any logs right even not older build.

But the app is working fine if they remove and reinstall the fresh app from store.

What should I do here.. :(

A suggestion for future releases is to include Crashlytics/Crittercism etc. to get instant crash reports. The last thing you would want is to wait for 36 - 72 hrs to get iTunes crash logs.