[Rio]

I think that I would have used granulated cane sugar for priming.

[Red_Devil 232]

I have never used cane sugar to prime with so do not know how it will act during carbonation. I know brown sugar should not be used when priming a brew.

This is from the link I gave last week Alternative Brewing Sugars

"Brown sugar should never be used for priming, as it distributes itself fairly unevenly, and can result in some beers being flat, while others explode in the bottle."