System Information
windows 8, intel core i7

Blender Version
Broken: 2.78c
Worked: (optional)

As the title suggests, when I render an animation in cycles, a material which includes a texture with transparency randomly disappears and just that texture (a couple of times a copy of the material but with other texture).
It can be fixed if I re-render the frame again, in ocassions I have to render the same frame multiple times in order for the texture to show off.

Still is annoying, I have to render a lot of similar projects and can't waste time looking for what frames failed + re-render them.

Even this same thing happens in the viewport, I have to go to object mode and return to render mode:

what can I do for prevent this? Already searched for hours online but no luck...

Thank you in advance...

Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps