Yesterdays update had a bug, where you got an error at the start of a battle because the sideview-battler picture couldn't be found. I throught I fixed it in a quick v.2 upload, but the bug was still causing errors in savegames. I made a new upload version 06.06.16, where savegames work again. If you started a new game on the v.2 version, it should work without problems as well.
Sorry for the inconvenience.