That'll be a shame if you can't fix it, Jason. Beyond a shame to be honest. It'll mean a move to Adobe's Creative Cloud to get DW CC 2014.1, which isn't cheap. It also mean the purchase of your MySQLi extension, which is another purchase that I didn't need to make prior to this problem.
Can you keep everyone posted on this? Be interested to know the breakdown of WA users on DW CS6 + Yosemite and subsequently how much attention this issue warrants.