When you have the choice between saving your scene as ".ma" (ASCII) or ".mb", make sure you default to ".ma" as it will help prevent any potential corruptions when the files are being uploaded to Render Rocket. This is highly recommended if you have more complex scenes with lots of layers and data that needs to be recalled by the program.
The reasoning behind this is the way they are saved.
".ma" format (ASCII) is saved as a script with lines of commands that you are able to edit and save out in a text document. The benefit is that if your file becomes corrupt, you may be able to run scripts in order to save your scene.
".mb" files are saved out as numeric values with compression, and no command lines are saved. That means if the file becomes corrupt, you have no chance of salvaging it. The only real benefit of ".mb" is that it makes file sizes smaller compared to ".ma", but we highly recommend you opt for the ".ma" file format.
If you have any further questions, please reach out to us at firstname.lastname@example.org