Currently Being ModeratedFeb 4, 2013 8:13 AM (in response to Linc Davis)
I tried clearing the contents of that folder, then rebooting the mac, immediately opening Messages and deleting he conversation. I can now open Messages again. Just hope no one else sends it to me!!
Currently Being ModeratedFeb 4, 2013 10:02 AM (in response to mattisanoob)
Turns out I didn't need to fix anything - I had deleted the thread containing the File:... on my iPhone and iPad and couldn't remove it on my Mac Messages which was causing the issue but when the same person sent me a new iMessage today, it seems to have synced with my iPhone and iPad and replaced the old thread with the new one. No more File:.. so everything works fine again!
Currently Being ModeratedFeb 4, 2013 10:07 AM (in response to Hemslow)
Of course: this .../// is no problem in iOS nor in iCloud, but only in Mountain Lion as said before.
Currently Being ModeratedFeb 4, 2013 10:32 AM (in response to LexSchellings)
Someone in this thread used the exact typing of the "bug" so the messages came in empty in my mail....