Tekkit Mod ID errors.

[Fwim]

Ok so this is my first post guys, here i go. 
 

So i have been quite slack on my reasonably large (500mb) tekkit world over the last year or so and just recently i've decided i want to start playing again. all my worlds had been previously backed up so i downloaded the client again, installed tekkit and COPIED my saved world into the save folder. Tekkit picks it up but on load gives a "Mod ID mismatch" error. quite a few of my mods and items are gone (ie my powersuit). Does anyone know how to get my world compatible with the newer versions of tekkit? i spent so much time in this world. cheers guys. much appreciated. 

Fwim

[Curunir]

Depending on what version you are coming from, there are some custom conversion tools made by users with some coding knowledge, but I don't know of any gold standard to name.

 

Given the state of current Tekkit and the deep changes in 1.2.x, starting over is not such a bad idea unless you have some buildings/monuments that you want to preserve. As for stashed resources, much of the stuff will be lost in conversion anyway, and we do have some powerful tools for gathering resources now, even without EE2.