So i read up on it and tried the suggested things and they didn't work.
The most notable thing that is missing is the Marble (and Gem Tool were cool as well).
With a New version of Vanilla Minecraft incoming i think i'll leave the world of errattic mods behind and go explore my world some more
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Err...
So my Technic Launcher updated and now i have a world without all the good stuff (IC2, Redpower, buildcraft etc)
Will all the come back when they update those mods or am i stuck with a bizarre world that's half as good as it was previously (or is there a way to reset it back to what it was prior to the change - i didn't ask it to update it and wouldn't let me play till it had downloaded what it was doing.
It was freaky heading back to my Main base and having to cross the vast chasms where marble had been and i am glad i was on the ground floor of my Secondary base as every floor above it was marble as well