PermissionsEX has been working fine up until now, after we updated Craftbukkit. Now, players cannot build or place blocks. I used a YAML parser, re-installed PermissionsEX, ModifyWorld, and EssentialsAntiBuild, but nothing works. Here is a copy of my Permissions config file. Thank you, and i hope you can respond as soon as possible.
I have the same problem to, the question is, were people able to talk and build before you updated your minecraft server? If yes, then the case is with the Dev build, you'll need to update to the Beta Build which is more secure and they just released it too, but until I get a more definite answer, I'll be keeping an eye out for the problem, if you have anything else that you need help with, then feel free to message me.