Board Thread:Questions and Answers/@comment-5625597-20130401040550/@comment-31.209.216.81-20130401145444

If you are playing on a server than it is not stragne since most servers have disabled dimensional doors because it tends to lag the server...

try doing it in single player, if it still does not work then check the %appdata% folder for tech. then go into .tekkitlite and see if the mod is in the mods folder :)