Still no iMessage file transfer in GM build

[lancastor]

Issue still occurs on a completely fresh re-installed OS X ML. Current working fix: Log off from OS X and re-login. DONE.

But I hope Apple is working in that iMessage issue. I think it occurs only when using standby/hibernation. But I'm not 100% sure if standy is the real root cause of this issue.

[lancastor]

Here is a solution from Apple Discussions:

https://discussions.apple.com/message/19190885#19190885

Considering that reinstalling the operating system is NOT a solution, I searched for something myself.

Pictures are controlled by xpcd, imagent and Messages, and it seems that when the problem arises is because they're using the wrong Apple server.

While this may be solved by Apple in a update (I hope so), in the meantime you can do a workaround (it worked for me on two different machines, and even days old images appeared).

In your Library, there is a folder called Preferences (that is /Users/<your_username>/Library/Preferences). There you should delete com.apple.imagent.plist com.apple.imservice.iMessage.plist and com.apple.imessage.bag.plist, with Messages CLOSED. Then reboot so Messages creates new ones. Also delete all file starting with com.apple.imagent, com.apple.imservice, com.apple.imessage and com.apple.iChat that end in .lock.

If even then it still is not working, deleting all files starting with com.apple.imagent, com.apple.imservice, com.apple.imessage and com.apple.iChat 100% for sure. But when you reboot you'll find you need to input again your login data for iMessage, FaceTime, Yahoo chat, AIM chat, Google Talk and Jabber (if you used them on Messages/iChat).

[Icy1007]

File transfer in Messages works perfectly for me. Can send files, pictures, etc just fine. No need to delete any files.

[shanezam203]

Originally Posted by lancastor

I'm using iMessage and I'm dragging files directly into the conversation window. It worked great in DP1, DP2 and DP3. But it's broken now.

I'm having the same issue where I can Message fine on my iMac with iMessage but I can not send picture files anymore. I can drag and drop and send them, but they never get through to other person and I don't see them as Sent on my iPhone or iPad.

any idea how to fix this?