Guys - just for your information...
After reading all 287 pages over the last few weeks finally decided to upgrade from RR ICS3 and Franco Kernel 5 to RR4.1. Followed nowipe instructions and got stuck at splashscreen. Tried reflashing but would not go past splashscreen (panic!)
Followed fullwipe instructions and managed to get past splashscreen (had two bootloops but third time went on to setup screen). I am now updating all apps and settings again
Has been a very nervous hour or so, but on road to recovery. Never had this problem flashing Rocket Roms before, but good to know that the flashing back to Abyss 4.2 and clearing caches/factory reset works.
Hope this helps any of you that are thinking of switching to ICS, or upgrading kernel.
Will see how 4.1 goes without flashing other kernels. Hopefully will solve hardware read error a few of us have been getting. Will update after a few hours if I don't see the error!
EDIT: Tried to install S3 theme but locked up at Samsung splashscreen. Gone back through fullwipe

Glad its a long weekend here
Thanks again Eybee for your great work.