Need help understanding and fixing some problems with AE2 before I can finaly ad gregtech 5U or 6 to my modcompilation

Installed AE2 after IC2 so I think, IC2 could be part of the problem, as
far as the info I could find on this so far troughout the internet.
Unfortunatly neither the log out form AE2 during initialisation nor the
sources of AE2 gave me a clue so far why below is happening, far less
how to fix it (quite new to this side of modded minecraft, but willing
to learn) :

[15:17:50] [Client thread/INFO] [AE2:C]: Initialization ( started )
[15:17:50]
 [Client thread/WARN] [AE2:C]: Unable to register a recipe:Unable to 
find item: appliedenergistics2:ItemMaterial.WoodenGear:0
[15:17:50]
 [Client thread/WARN] [AE2:C]: Unable to register a recipe:Unable to 
find item: appliedenergistics2:ItemMaterial.IronNugget:0
[15:17:50]
 [Client thread/WARN] [AE2:C]: Unable to register a recipe:Unable to 
find item: appliedenergistics2:ItemMaterial.GoldDust:0
[15:17:50]
 [Client thread/WARN] [AE2:C]: Unable to register a recipe:Unable to 
find item: appliedenergistics2:ItemMaterial.IronDust:0
[15:17:50]
 [Client thread/WARN] [AE2:C]: Unable to register a recipe:Unable to 
find item: appliedenergistics2:ItemMaterial.Silicon:0
[15:17:50]
 [Client thread/WARN] [AE2:C]: Unable to register a recipe:Unable to 
find item: appliedenergistics2:ItemMaterial.Silicon:0
[15:17:50] [Client thread/INFO] [AE2:C]: Recipes Loading: Shapeless: 55 loaded.

I hope I can find help here. Thanks for your patience with me in advance.

Feel free to ask, if you ne more information as I already provided.

As far as I understanded it this is the latest stable AE2 that cause the problem. correct my if I am wrong. so you dont have to scroll trough the log AE is rv2-stable-10.

Thanks GregoriusT, good to know that fact, should be in the AE2 documentation big fat and red as important thing, I was parcticaly worried because Thaumic eneristics putted out a warning aswell, not all ascepects could be processed from that thing.

Edit: another similar thing but this time in the IC2 APi

[15:17:25] [Client thread/INFO] [STDOUT]: [ic2.api.item.IC2Items:getItem:36]: IC2 API: Call getItem failed for compressedPlantBall
[15:17:25] [Client thread/INFO] [STDOUT]: [ic2.api.item.IC2Items:getItem:36]: IC2 API: Call getItem failed for matter

Probalby i am overcautios and this is solved allready elsewhere, but I don't know about the technical side of my favourite mods yet (I promisse, I get better). So I ask about that as well.