The cast - which includes actresses Nargis Fakhri and Ileana D'Cruz, and David Dhawan's son Varun - and crew were in a vanity van when a generator powering the vans caught fire.
The cast and crew were evacuated and were unhurt.
On October 13, Nargis Fakhri tweeted about how much she had enjoyed shooting the film in Bangkok: Last day on set4 #MTH so sad... Loved every1& had so much fun. What a lovey memorable bunch! Cast n crew included. bye Bangkok.
Main Tera Hero is scheduled to release in April 2014.