About: Wikimedia:Commons-android-error-crash_dialog_comment_prompt/frr
Fragment of a discussion from Translating talk:WikimediaMobile
Hmm. Translating this product with TUX shouldn't be possible, and the error is expected. There is a whitelist in place, because android applications can only handle two letter language codes. "frr" is a three letter language code, and not in the list. It working on TUX is a bug.