DAS returns all 0s

[thorstone25]

It appears every now and then, the UltrasoundSystem.DAS() returns all 0s on CUDA-enabled computers. I think its likely related to the ptx-file version. It's unclear why exactly this happens, whether it's related to MATLAB or CUDA behaviour or simply versioning issues, but is likely related to the ptx-file version.

Recompiling by running setup cache and recreating the UltrasoundSystem or us = UltrasoundSystem('recompile', true); should provide a work-around for now.