/Applications/fsl/src/fdt/CUDA/bedpostx_gpu ./Diffusion -n 3 -g
This says:....
----- Bedpostx Monitor -----
Queuing post processing stage
An error ocurred. Please check file /Users/posnerlab/Desktop/Analysis/BigData/HCP/100307/T1w/Diffusion.bedpostX/logs/bedpostx_gpu.e6238.1
/bin/sh: line 1: /Applications/fsl/bin/xfibres_gpu: No such file or directory