So I'm playing a Paladin 6, Sorcerer 4, and noticed my total spell slot totals were wrong (4,2 instead of 4,3,3,1), so i checked multiclassing and saw it had changed to Barbarian, not Sorcerer. I changed it back, and even changed my spellcaster level in the attributes to 7, but it didn't change the amount listed. I tried rolling one of my Sorcerer Hit Dice, and it rolled a d0 + CON, which is uh... not right. My friend who is a Sorc/Warlock rolled one of his Warlock Hit Dice and got the same result, so its not just me. Seems like a coding bug to us. Temporary fix for people with the same problem: underneath the Custom Class box is a box where you can add spell slots to your total, use that to readjust your slot amounts! So yeah, hope this gets fixed soon. Not that big a deal, but still kinda annoying!