Originally Posted by Synaptic Flow
It was 30MB even though I had way more than that free.
OK, what that means is that you have corrupted files on the player. This is not a Rockbox-specific issue, many users have experienced it with the Sansa firmware. What you need to do is format the player, and re-load it.
iPod Touch 5G 32GB, Touch 4G 32GB, Clip Sport 8GB. Rockbox-> Clip Zip 4GB, iPod Nano 2G 4GB, iPod 5.5G 80GB
2012 Nexus 7 32GB, Asus MeMoPad 8 16+64GB, LG Optimus G Pro, Nokia Lumia 900 and Lumia 520