With more than 24 hours before the start of the Michael Jackson tribute concert, the event is experiencing some major setbacks. R&B singer Chris Brown has pulled out of the show, which is set to take place in Cardiff, Wales on Oct. 8. In addition, Facebook has canceled it's online broadcast of the weekend event, as well.

According to reports, Breezy was forced to cancel his performance because he is banned from the UK due to his past criminal record of assaulting his ex-girlfriend Rihanna. Brown follows behind the Black Eyed Peas who also pulled out from the event due to "unavoidable circumstances."

On top of that, Facebook has nixed their online broadcast of the Michael Jackson tribute concert due to rights issues. The live streaming of the event was scheduled for 10AM PST and viewers would have to pay $4-5 to watch the entire concert.

These abrupt cancellations hasn't fazed organizers who insists that the show will go on as scheduled. Chris Hunt, head of Global Live Events which is coordinating "Michael Forever" concert, has admitted that preparations for the event have been "challenging" but nothing out of the ordinary.

Granted, with Breezy and B.E.P. jumping ship, it looks like the MJ tribute concert is in trouble, but the line-up of all-star performers still looks solid. So far, Beyonce, Smokey Robinson, Jennifer Hudson, Alien Ant Farm, will.i.am, Cee Lo Green, Christina Aguilera, Jamie Foxx, Ne-Yo, Leona Lewis and more are ready to rock the stage this weekend. Let's just hope everything comes together as planned. We're crossing our fingers.

Are you guys watching the Michael Jackson Forever event this weekend? Tell us in the comments below.