Ok, this is issue number one, and it's kinda bad... My fault, please keep the old savegame if you experience the darkness bug so we can solve it next update.
So the problem is: the new lightning system uses new parameters so if we load an old save wich has already those parameters set it will likely not work giving a impossible to see screen.
1) find a way to exit to the nearest non dark map, then the bad parameters will be wiped out and you're ready to go
2) wait until we fix this son of a bitch
Depending on where you are getting to the lollypop factory might be extremely hard, i'm sending you pics of the rooms. Let me know if you manage to get out to the light.
Cave near I.C.E. Storage room
Cave near Icepops Factory
Central cave with trees and glowing mushrooms
Lake cave, dragon antichamber
If I can't code it, it doesn't exist.