Hi Emilie,

That information does help. We noticed that our bvec values repeated, and assumed our protocol had generated a duplicate set of images, so we removed half the direction vectors and half of the images. When I input the Bvec for 128 directions with the  original set of 257 images (1 image at B=0 and 128 each at B=1000 and B=2000) the program progressed further but still did not complete the processing, giving a different set of errors. I've attached the GUI text for the latest attempt. Any further guidance is greatly appreciated.

Thank you,
Ryan