Assertion Failure

So this only started happening after i17 came out today. I play for about 2 minutes and it stops and "Assertion Failure" pops up. Then the game quits. I have NO idea why.

I'm running an iMac on Snow Leopard.
My graphics card is: ATI Radeon X1600

I've had to restart my computer many times because it would freeze and the game itself many MORE times!

I've deleted the City Of Heroes Preference file, flushed the terminal and verified files!
What do I do??? I just wana enjoy Ultra Mode and cute kitty tails and stuffs.

Repeated Assertion Failure errors often means you have a corrupted game file somewhere. Try using the Verify Files button when you start the patcher.

I have. Every time i've started up the game, i've verified the files and nothing seems to work.

Now the game just starts freezing and I have to unplug my computer and start all over.
It'll happen at the login screen or if i'm just flying around etc etc.

Does it freeze when you start up the game? Do you see a black screen or do you see the login screen?

Neither. Sometimes it's when I'm about to select which toon to play or right after I choose them. Then the current section of the background music just repeats and repeats

Definitely sounds like a defective game file somewhere. Do you have another copy on either a Windows or Mac computer? Otherwise you may have to delete the game files and re-download them.

To access them right-click City of Heroes, and select Show Package Contents. Then go to Contents > Resources > transgaming > coh. Throw out the files in there except for the "cider" and folder and "cohupdater.exe" file and then run City of Heroes again.