Hi Log,
finaly i found a Solution for our problem here in the Forum :-)
http://forums.technicpack.net/threads/mcpc-bukkit-plugins-on-tekkit-lite.36732/
Download the newest mcpc.jar and replace it with the tekkilite.jar.
rename it to TekkitLite.jar or edit the start.bat.
Now the signs [Time],[Warp]...works on my server :-)
hope this helps you too