hi! thank you so much for playing (:
there's currently no 'ending'. i plan on adding one in the future when i add in the extra 2 worlds i have planned. the ghost and tarot effects are mostly for cosmetic reasons.
as for the errors: the first one hasn't happened to me but i will definitely try to reproduce that, that's a huge issue. the second one was a glitch i was getting in an older build, are you on the newest build? if so i will have to double check my solution to that. ): the third one is unfortunately a fail safe in case two effects were playing at once, it makes sure the game turns off the first one before entering the next.
thanks again for the glitch reporting!!!