Some drivers can return SR_ERR_NA upon some config_get() requests, either intentionally or due to bugs or incomplete features in the driver. Currently PV crashes with: Caught exception of type N6sigrok5ErrorE (not applicable) It should handle these cases more gracefully, though. The specific ones I'm currently seeing are SR_CONF_AVG_SAMPLES and probably SR_CONF_AVERAGING, though I haven't fully investigated yet.
*** This bug has been marked as a duplicate of bug 1035 ***