This article only applies to older versions of Studio (Studio 11 and previous)
If the Custom preset is used when making a DivX file and if the Resolution is set to Small, the frame rate will default to either 25 or 29.97. This is an incorrect frame rate for this resolution and the file cannot be created.
To resolve the problem, set the frame rate to 15 fps to create this size of DivX file. In the Frame Rate section select Half Standard, or select custom and enter the frame rate as 15 fps.
This will be fixed in a future release of Studio.