Shock: Producer Unhappy with the Hero?

Is the producer of a very very big project unhappy with a hero? According to keen observers of Tollywood the answer is 'yes'. Don't know the reason why the producer forgot to extend his gratitude to the heroes during the pre release event of the film produced by him. Though the producer thanked all the technicians and actors, he ignored thanking the protagonists. However, he appeared to have realized his mistake and thanked the heroes, finally.

But the damage turned inevitable. One of the heroes called producer ignoring their names 'a Rogam'. (A disease)

It's now understood that the producer has done it intentionally. But why? Hasn't he been satisfied with one or more actors? If so, who are they? A million dollar question indeed!