Rpg Maker Developers Group

In following the tutorial (and adding a few idiosyncratic modifications), I've encountered three glitches: First, when I kill penguins close in proximity to each other, sometimes one will fall into the ground and get stuck there as a translucent ghostlike shade of its former self (see image below). Second, when standing on top of a dead penguin, sometimes (perhaps because of interference from the bounce effect?) my character will be transported vertically to the top of the screen and sent falling downwards. Third, when I create the Boss Penguin, for some odd reason a smaller penguin always appears attached to its top left corner; the Boss Penguin flashes as if taking damage before disappearing altogether leaving only the smaller penguin.

How can I fix these errors?

Note: In the image below, look to the bottom left corner of the Player. In the screenshot, the penguin appears solid and motionless, but during actual gameplay it frantically turns back and forth (rebounding off the walls) thus creating the shade effect mentioned above.

Protected download