That theme looks so nice! =D
Unfortunately, it doen't want to work on my Arc S x)
I installed the ICS Sandwich firmware again (I hope you meant that by "Full Flash"), but then I had to root & install cmw again, because it got lost through flashing the firmware again.
After rooting and installing CMW recovery again, I choosed your theme by "install ZIP from SD Cart" and after just a few seconds it says, that it finished.
I rebooted and it still wasn't your theme - quite strange.
Can someone help me? :/