Well you evidently haven't removed all the ic2/api folders from your mods, as this error is EXACTLY what happens when you don't.
And you can find this error some pages back or in the OP :/.
Thanks for verifying the problem, i will look a little closer.
Hello
i get this error when i run transformers on my server, runs ok in the same test in ssp, and i have removed all the IC2/API from the mods that had them and still got the same thing.
running
ic1 1.109.113
forge 6.4.1.426
plus a lot more
i havent seen this error posted yet so i hope this helps, love your mod.
I am having the same problem, if i dismount all of my energy production devices.... IE MFE, MFS, generators, solar collectors, then i can travel long distances with out a single crash, this does not fix the problem of a non functional personal teleporter or portal gun when i am far from base they still fizzle.
A hotfix would be much appreciated (if the problem is fixable that is)
Thanks
Love the lets play series, great job. Was watching the trouble with overflow on your recyclers and had the same problem, then i tried placing a transport pipe on each recycler and that seems to do a great job. im running the o.6 release. Just thought it might help.
Looing forward to episode 42!!
Worked like a charm, thanks, up till now i was breaking the cable connection when i was done with the mass fab. 
Love IC2, tried to hydrate some coal dust and when i put 8 dust and 1 water bucket i only get 1 coal instead of 8 like IC, is this right?
Also the taps on some of my rubber trees are at the very top of the tree, is there a way to have them form closer to the root?
thanks for listening.
