Error during compute

[seriouscyrus]

Hi! just working through your project, I'll try to look into it but i'm getting the following error:

validateComputeFunctionArguments:1065: failed assertion `Compute Function(project_and_sh_forward_kernel): argument cam_pos[0] from Buffer(18) with offset(0) and length(12) has space for 12 bytes, but argument has a length(16).'