Thanks Stefan, I'll guess I'll than wait till after the weekend, when 'everything' is reworked.
Further, in addition to my previous messages I can report some more mods working o.k in 4.12:
Aircraft:
A6M_JCats_20110605 needs Arms_JCats_A6M_20110101
B-25_new needs AAA_Weapons
B-26B_for409_v2.2a needs Weapons complement 260lbsBombfrag & M26Incendiary V2
Beaufighters_SAS_v3
Bf109BCD_SAS_v1.1 needs Stefan2's fix
BF-110 version reworked by Greif
Blenheim Mk If
Blenheim Mk IV v2
F4U1_Birdcage Muas
Fokker_CX needs Arms_Dutch, Russian & France
FokkerG1
Hurricane_Pack_SAS
Koolhoven_FK51+fix needs Arms_Finland & Spain
Lagg3 serie1 & 11
late Corsairs planes V2 needs late Corsairs weapons standalone
Me-262 needs 00_MortarMod
MiG-3
P38 Lightning Collection Light v1.1 also needs AAA_Weapons
P-40_Pack_v1.1
P-51Bs
R-5_R-5_skis flyable v1.2
Spitfire 1 tm 5 SAS v3.0
Spitfire 12 & 14 Griffons
Spitfire 14e bubble top
Typhoons & Tempests PACK V2cczk_101tfs_- standalone needs Hurricane_Pack_SAS & Bombs 250-500-1000_Loku_UK
Yak-1_KB
Adding these mods to the #SAS folder I had the expierience that copying the mod folders from my 4.10 install sometimes didn't work, using a fresh 'unpacked' one did. Also I found that there are more dependencies between mods than I knew; I had to start from a fresh #SAS folder as my 75 gallon tank was again floating free under its shackles. I put B-25 new + AAA_weapons in the folder and the planes didn't show in the QMB screen ???, pressing 'Fly' and than Shift - Tab gave the info that Gear.mat could not be opened. Checked the planes folder and the Gear files where present. But the planes only became visible after putting Jero's New Wheels mod back in the folder, as it hab been in the previous one.
I had the same with the Typhoon mod; only the bombs where selctable in QMB. Putting Loku's bombs back gave me the rocket load-outs back. And changed the colours of the Beaufighter rockets from white / red to green.
Could it be that Il-2 makes connections between different folders somewhere?
Oh, the floating tank was caused by the '75Gallon tank' folder inside Loku's USAAF ordnance, even when only the skin file was left, so that one had to go.
I also deleted the SpitfireMkIvroeg folder from Jero's Spitfre spinners fix as this gave wrong colour on the spinner.