While Unnaipol Oruvan (2009) has often been raked up in connection with Vishwaroopam for its 'portrayal' of Muslims, that's not why it ran into trouble.
This time, the issue was that Kamal allegedly flouted contractual obligations of roping in Big B and Priyanka Chopra and so Pyramid Saimira sought a stay on the film's release. Meanwhile, Kamal claimed there was no such stay.
There was a lot of back & forth between Kamal, the court and the production company. And the film did release. To positive reviews and a great run at the box office.
Kamal vs. Controversy:1-1