An error message states that there is not enough space to render to the specified drive. This can be caused be two problems.
The first problem occurs when using the Juicer 3 SFX Edition that shipped with the SFX Library. The Juicer 3 SFX Edition will attempt to render to a removable drive (camera, flash card, etc) instead of the hard drive selected by the user.
To fix this issue you must update to the latest version of the Juicer 3:
The second problem occurs when there is simply not enough space on the hard drive selected to complete the render. Choosing a drive with more free space or clearing up some space on the drive will solve the problem.