Ok, this is not much of a tip but something I did now after two consecutively black goo blow outs and lots of reading around and browsing, the +/- thing, in my case was 3 I required 67 Power, 103 Enchantment, suggestion don't go to the extremes, that is 70 or 64 and 106 or 100, with the rounding thing if you go off or over a decimal it will turn to a black goo. At least this is what I noticed of the other people that had this result with the ingredients "on the required amounts", they don't show you the decimals but the system IS measuring them.
It required me the +/- 3 so I just stayed in the +/- 2 side of the equation, same for spectral essence, aim for the required amount don't go +/- 1 because it will mess up the whole thing.
Hope that helps...
BTW...I got the Singularity...nooooo, couldn't get the one solved already...nooo too much to ask for...

*sighs* Well here goes the holiday weekend
