.img and .iso files do not play in 1.3

Since the update can no longer play .img and .iso files. When I select the movie, it starts loading for a very long time (minutes), then it starts buffering for an even longer time. The only way to get out of this state is to pull the power plug. The ATV does not respond to the remote control.

When I copy the contents from the .iso or .img to a folder it plays fine.

Would you mind sending in a bug report?