You can't find recipes that crash NEI, isn't that good? Unless you mean searching recipes crashes NEI, then you need to backdate NEI I think. Or update to IC2 experimental like everyone else.
For example : I want to craft a Lv-transformer but I don't know the recipe, and when I look for it on NEI the game crash. And I can't find the recipe on internet.
Is there a database with all the new Ic2 recipes ? or What should I do to fix NEI ? (When I use NEI 1.6.1.3 I get an error message saying I have to use NEI 1.6.1.4. There must be a dependence with other mods but I can't identify which one.)
English is not my mother tongue, sorry if I made mistake.
Are you using Extra Utilities? The old version (pre-releases) of Extra Utilities crashed IC2 recipes that included wooden planks. Update that mod to the latest version and you'll fix the problem.