hi, I wanted to try this mod but I lost most of my ae2 recipe in nei and my pattern became invalid for most of ae2 items...
don't know if is nei or mekanism bugg please help

Not on Mekanism's side then.

Forge and mekanism versions?

forge 10.13.4.1448
mekanism 8.1.5

as far every things work fine again, had to upgrage ic2 and buildcraft