You're asking this right in the middle of the board where you're supposed to do exactly that.
(Well, the next one over that is)

Depending on the content of your videos they may be considered Fair Use, but I haven't seen them so I can't say for sure. (Not that I could if I did, it's a legal area grayer than the neutral planet).

One thing I CAN tell you for (99.98%) sure though, is that Team Meat isn't going to hassle you about it. If you want to be that extra 0.02% sure however, contact Team Meat about it using the form on the about page.

Feel free to replace "-1280x720" with your desired resolution for the game.

If it's still black while windowed I would suggest updating your graphics drivers (whatever drivers came with your GPU are most likely out of date).

Does it happen on other levels? Does it happen after you've restarted the game or the system?

Unless you get another computer, you're going to have to make separate backups of the UserData folder and overwrite the non-backup folder with the saves you want to use before you play.

Also, your file HAS been completely overwritten unfortunately.

[this fix]

Could anyone in this thread please verify that this fix worked for them?

How can I verify the Integrity of the Game's Cache when I didn't download it off Steam?

Seadawg may have, as well as other Humble Bundle purchasers reading this thread who used the steam key.

Anyways, forgot to mention updating your drivers, but please note that these are not guaranteed fixes and I still need to look through the old threads for something more definite.

There are no fixes for that Runtime Error in the stickies. I should probably dig around the old threads and correct this.

For now though, Verify the Integrity of the Game Cache, and if that doesn't fix it re-install DirectX.

You can do the levels in any order by returning to the world map, but if you die once on any level you do have to restart the world.

Absolutely 

[after]

There is so much wrong with your post that I don't even know where to begin, so I'll start at the end.

No one will take this seriously.

For starters, you're trying to copyright a meme that originated on 4chan in 2009, and are doing so over a year after Super Meat World was released, as a free addition I might add, to the game.

Also, the "forever alone" character you claim to own the copyright to is not used in Super Meat Boy. The use in question is not of that character, but Doctor Fetus is drawn by Edmund McMillen with a face based off of the Forever Alone guy. The art is original, and the character is too.

I'm no expert on United Kingdom copyright law, but I don't have to be to know that if for whatever reason you manage to successfully take this to court, you would lose. If not by ruling, then at least by legal fees.

Now stop wasting ours, and attempting to waste Team Meat's, time and scam for royalties somewhere else.


tl;dr

You'll have to get in contact with Team Meat directly, as they no longer browse these forums.

You could try this contact form, or send a tweet to @SuperMeatBoy.

Did this also happen while you weren't streaming?

If you can't help eachother out, or get an answer from the guy who handled the Linux port, you guys are out of luck. Sorry. 

Well then the obvious solution is to re-install that .dll.