Last modified: 2013-03-02 00:59:22 UTC
When I use Android app for Commons it doesn't support accents in title 1. I put the title with accents: it is ok 2. After the uploaded is when happen a bug Example: http://commons.wikimedia.org/wiki/File:Vista_de_la_Ciudad_de_M%3Fxico.jpeg
File moved, but filename was wrong as reported.
Fixed in dd6f6c45a19f6bb4af5e526725c8fbf362d6e5ba. Will be in the update to be rolled out on Monday. Thanks for reporting!