Incompatible with MV-NetherPortals

[dumptruckman]

Looks like we have an issue where servers using MV-NetherPortals and MV-SignPortals (a sign on a NetherPortal) produces undesirable results.

A user created a sign portal on a nether portal frame for world destination: fred
As op, the user could use the portal and go to fred.
Non-ops using the portal would be bounced back and get some error saying the destination doesn't exist.

I got him to get some debug output:
http://pastebin.com/raw.php?i=viZ9MsXN

It appears that NetherPortals may be bouncing people back.

[dumptruckman]

Turns out, giving the player access permission resolves the issue of not being able to use the portal. However, the text the players received was a bit misleading.