Hey, I get this message every time I try to send a message in game "Failed to send. (19)"... And now when I recieve messages in-game or from the Viewer their body is blank. I also can't send any messages from in-game or the Viewer. This has been very inconvenient

. This started happening since the last major patch, so I would figure I would reinstall everything... But before I do, is there anything I can do without reinstalling? Any help would be much appreciated.
PS: I know this can't be a router problem, it's been functioning properly and I haven't ever had a problem with it before :/.