Bukkit

tpLogin v1.4
October 25, 2013
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+ Added teleport bypass permission and config option.
    If enabled in the config.yml file, players who have [tpLogin.bypassTP] will not get teleported. (Being OP doesn't matter.)
+ Added update checking support. Can enable/disable in the config.yml
    Use /tpLogin update to force update. Requires the [tpLogin.admin] permission.
+ New additions to the config.yml
    update.onEnable
        true - Check for updates on plugin start.
        false - Do not check for updates on plugin start. (Not recommended!)
    update.periodicChecks
        true - Check for updates periodically.
        false - Do not check for updates periodically. (Not recommended!)
* Internal Change: Modified package and class naming.
* Various code changes and fixes.

You may see a "Plugin Already Initialized" error message on startup if you're using a Spigot build.

This can be fixed by updating to tpLogin v1.5.1.