I've been trying to work out how to do a build with some friends and decided to try using the replay mod as well. I finally found a mod version of WorldEdit on curseforge (here: http://minecraft.curseforge.com/projects/worldedit). I got it running in the same version as the Replay mod when separate, but when both are together, it won't let me use commands, or access chat at all for that matter. I was wondering if there might be a conflict, and if it would be on the Replay mod's side, or the WorldEdit's side. If any information is needed that I haven't given, I'm happy to add to it if I can.
Note: The game doesn't crash and loads without error (at least not visual errors), and the only side affect seems to be the chat bug. I've tried moving and playing normally, and it works, I just can't use chat for anything. I don't know if this affects the bukkit plugin or not, but running the mod from a server yielded the same results (broken chat, even though both work seperately).
Overall, great mod and I plan on using it in the future for other things, I just can't get it working with this one mod. Hopefully someone can help, and thanks in advance.