I have this problem too. I have stumbled upon it when I updated to MIUI ROM 4.5.30 and it is kind of a bug: FileExplorer crashes that very moment I want to log in MiDrive (KuaiPan). Wiping data and cache does not help to eliminate the problem or it is helpful for a short time. As soon as I tap the MiDrive (KuaiPan) tab next time it happens again. At first I thought it might be as a result of installing the KuaiPan app and adding a MiDrive (KuaiPan) account to the Xiaomi account and uniting them in order to make possible login to MiDrive (KuaiPan) cloud using any of the accounts. The problem was reported here too. http://en.miui.com/forum.php?mod=re...=redirect&goto=findpost&ptid=22972&pid=455004
So I uninstalled the Kuaipan app and separated the Xiaomi and the MiDrive (KuaiPan) accounts. I wiped everything and flashed MIUI 4.5.9, because there was no Xiaomi-Authenticator in this version and I thought it might have something in common with the problem. There was no problem to log in the MiDrive (KuaiPan) cloud using MIUI 4.5.9. I updated to 4.5.23 and it was working properly. But when I updated for the second time to 4.5.30 (there was no 4.5.16 version for MI2S) the problem attacked me again. I updated to 4.6.6 and hoped that it would be fixed but in vain. I wiped the ROM and made a "clean" installation of 4.6.6 but this problem still exists not only in the multi language ROM, but in the original MIUI Developer ROM too and not only in MI2S. There are not many reports in this forum maybe because a small number of Europeans are interested in using this Chinese cloud service because of low speed. I hope this bug will be fixed soon.
I solved my problem in this way: I opened Root Explorer and deleted FileExplorer.apk (from the MIUI Dev Multilang ROM xiaomi.eu_multi_aries_4.6.6_jb-4.1) and changed it with FileExplorer.apk from xiaomi.eu_multi_aries_4.5.23_jb-4.1. Now MiDrive (KuaiPan) is working. Here is a link to the FileExplorer.apk from xiaomi.eu_multi_aries_4.5.23_jb-4.1. You should use FileExplorer.apk from the corresponding MI3 (or S3 or what so ever) ROMs. And do not forget to apply the Permissions the way they were before the change. https://db.tt/S75dQaST
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