Hi Jan,
I hope I am not trawling old ground here but I have come up with a problem on a new install that I got the impression was fixed by "SPPC attributes mod rev. 1"
I did a clean install with RC2 + SPPC 4.2.0 and everything works fine except that for the attributes, the price still displays as the "Retail" price on product info, but when you click add to cart, the cart price shows the correct "wholesale" price.
I have also modded for sort product options (attributes) in conjunction with Options as images, which alters the option_images file. I tried reversing the mods etc, but just cannot trace the problem.
Any help or pointers much appreciated.