Collisions are off by about 1px in 1.1

Since installing 1.1, the collisions on my player actor are off by one pixel and it seems to glide on the ground a little. This normally wouldn't be a big deal, but the sprite is only 5px high, so it's very noticeable. Trying to adjust the collision box by one pixel makes it sink into the group slightly. Is there anything I can do about this?

Did you run any of the previews, or is this your first time looking at 1.1?

Do you mind sending your game as a zip through PM?  I want to test between versions.

I did not use the previews. Here's the ZIP.

Thanks!  Checking it out now.

Alright found the issue, try this engine.swc out:  Replace in plaf/flash

Yup, that's solved it. Thanks!