Yes bro this
So.... the reason this is happening is because technically that map is broken. It has been broken since 2013.
When it was last saved in the Map Editor (2013-08-28) there must have been an error, because it never finished saving 100%. Specifically, the background never saved. That's why it looks all black like this:
Is this what it looked like when you last played it?
Btw I've made an update to allow "partially broken" maps like this one to continue being played, so you can try playing it again.... but I can't do anything about the missing background, sorry. We would have to get the original map author to re-upload it.