I have no idea as to how these server issues are solved, but is there a possibility these issues are created from character generation? I mean, when you already have a character saved, and then try to join to play as same character under same username. Another thing I noticed is that, when switched back to build 23 or another SP build (or maybe a non-beta build), there are save files named after the servers that possibly allow you to access your MP character from Single Player. I have not tested as to whether or not I can access these characters from these files, due to my desire of keeping my character's progress in MP intact, and therefore untouched. If there's anyone who has the balls to try it out, though, I guess you can... go on... ahead? It's silly to say it, because it's not like you need my permission or any bullshit like that, lol.