Ppl who got stuck with denominations (hours and hours since last denomination) check your debug.log and see which amount Darksend+ is trying to pair with. Watch for this line : Submiting Darksend for ...... If the amount is a rare amount then stop darksend+ and calculate which amount would make it easily pairable again .. the rest of the amount will need to go outside yr wallet. This needs to be done through coin control by selecting those amounts with the lesser rounds then start Darksend+ again. note : so only select those amounts with lesser rounds that make it a rare amount... normal amounts are 1-10-100-500-1024-4096 lets say for example darksend+ is trying to pair 550 then only 50 of those lesser rounds needs to go out. My own wallet is now happily denominating again after having stuck for 15 hours trying to pair a 600 amount which is rather rare. I sent 100 out and it worked again.