I did not post a plugin list because the source has been isolated to PEX or the interaction between PEX and Vault. I have a reasonable amount of experience running a server, but recently I edited my permissions.yml file (PEX) using notepad++ but once loaded the server gave an internal error disconnection to any connection requests given by new players, mods, and admins (admins have the - '*' permission) I double checked for simple mistakes and all the nodes were correct along with spacing. Looking into the log, I got a wall of errors, but importantly these: [INFO] [Vault][Permission] PermissionsEx hooked.2012-03-13 19:46:09 [SEVERE]at java.lang.reflect.Method.invoke(Unknown Source) Caused by: java.lang.RuntimeException: Permissions manager is not accessable. Is the PermissionsEx plugin enabled? 19:46:15 [SEVERE] java.lang.RuntimeException: Permissions manager is not accessable. Is the PermissionsEx plugin enabled? 2012-03-13 19:46:15 [SEVERE]at ru.tehkode.permissions.bukkit.PermissionsEx.getPermissionManager(PermissionsEx.java:148) 2012-03-13 19:46:15 [SEVERE]at ru.tehkode.permissions.bukkit.PermissionsEx.getUser(PermissionsEx.java:155) And of course this is accompanied by many other errors, but this is the play-by-play I see as most important. Also, I isolated PEX as the problem as when it is removed (but vault stays) the server works, or if vault goes it still has the same errors (yes I deleted the log to see new errors ) The craftbukkit is a beta from right after the 1.2.3 update.