Car Morph

Sadly i dont know why, but the Ps is fucked up two frames in the morph, thats why the color flickering in the background when the morph happen. I rendered the gif from a jpeq sequence, which is perfect. Even in the Ps, until the save for web windows pop up, and i try to make a gif, this two frames color are dropped.

Sorry for that, i hope you can enjoy the morph together with this problem, or if you know the reason why this flickering happen, please tell me!

Thank you :)