There were a couple issues introduced with the last release that should now be fixed:

• The tower should appear properly in Sinking Sands Heart of The Sandpit
  
• The snowballs should appear properly in the Snowball Scramble Challenge Level
  

Be sure that Steam has updated the game and verify the correct build number (6489066) in the in-game options menu.

Thanks to ToriMakara, creepercraftsix, bitweeder (and others) for reporting these issues! And please let us know if you spot anything else, as we're a small team and our resources are limited, so we appreciate all the help from the community.

Thanks,

Paul & Ben