What kind of brushes exactly? Erodible, Airbrush, Bristle, sampled, regular?
Could you post screenshots of the Brush Panel (for Brush Tip Shape and checked elements like Shape Dynamics etc.) for one affected Brush?
They are shape brushes, a set of 10, the entire set will not load in photoshop for him. He gets an error message saying that the version the brushes were created (which is CC) in is not compatible with cs5. Just wondering if there were any easy fixes for this and if this is a general bug. The brushes loaded fine for me, but I'm using CC.
I think the error is simple to understand. Brushes created in a newer version of Photoshop, CC 2014, aren't compatible with older versions of Photoshop, CS5.
You should of checked with the client as to which version of PS he was using and made them to work with that version.
If you still have PS CS5 install it and Re-Create the brushes ion that version. Then send him a corrected set. Or offer him a refund.
Here's link to the Photoshop CS5 trial Download CS5 products
You then have 30 days to make them.
I know you both got blindsided, but I suppose you did list that they were for CC and he took a chances running it on an older version, which you did not specify as being for CS5.