From Dana Whites Twitter page:
“Karo Parisyan has f***ed over the UFC, the fans and his opponent again!!! He will not be fighting saturday or ever again in the UFC!!”
“Pulled out of the fight the day before weigh ins again with a laundry list of excuses!!! Let the press ask karo why! Let him explain.”
MMAWeekly.com has this:
Karo “The Heat” Parisyan is out of UFC 106 after failing to acquire a license in Nevada, according to Parisyan, due to not having the money to pay his fine from previously being suspended after testing positive for a three different pain killers following his UFC 94 bout with Kim Dong-hyun.
“There’s a lot of problems going on. They won’t re-license me unless I (expletive) pay them,” Parisyan told MMAWeekly.com. “I had to pay the $32,000 fine in order to fight. I never paid because I never had the money. I don’t know if I’ll be able to come back.”

