Collectible Card Game Headquarters

Describe the Bug:
You can't elect to pay Polar Kraken's cumulative upkeep cost if there's an Angel of Jubilation on the battlefield and you would have to sacrifice any land creatures to do it. (If you do have enough non-creature lands to pay, you can choose land creatures once you start sacrificing; this is correct.)

Which card did behave improperly ?
Polar Kraken.

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
FRF.

What exactly should be the correct behavior/interaction ?
Cumulative upkeep is a non-activated ability, so Angel of Jubilation shouldn't matter.

Are any other cards possibly affected by this bug ?
For cumulative upkeep and sacrificing creatures, Phyrexian Soulgorger. For cumulative upkeep and paying life, Glacial Chasm, Gallowbraid, Morinfen, and Inner Sanctum.

Probably many others for other costs. Lord of the Pit springs immediately to mind.

Also ETB life paying, ex. Blood Crypt is prevented by Angel of Jubilation

Polar Kraken in fixed in 452117c
Phyrexian Soulgorger fixed in 70a427a
As for the life payment: I added a specific function and inserted it in the 'generic_activated_ability'. I've also fixed with the new function Bond of Agony, Fumarole, Hatred, Toxic Deluge and Withering Boon. The previous "can_pay_life" function should be fine for the rest of the cases, as now only checks for Platinum Emperion.
Hopefully this is enough.

Mostly fixed.

Don't know if this is what broke it, but come your first upkeep after playing Glacial Chasm the program crashes.

Glacial Chasm is unrelated, probably my fault, and fixed in 287e48f.