Fixed issue with attachments that have unknown file types.
Fixed issue with attachments that have unknown file types.

infinity-next/infinity-next,tmrwbo/infinity-next,infinity-next/infinity-next,tmrwbo/infinity-next,nextchan/infinity-next,interjection/infinity-next,nextchan/infinity-next,interjection/infinity-next,interjection/infinity-next,nextchan/infinity-next,tmrwbo/infinity-next,nextchan/infinity-next,infinity-next/infinity-next