Stop acquisition on error.

Author: spielman

Diff for: labscript_devices/IMAQdxCamera/blacs_workers.py

@@ -224,7 +224,9 @@ def grab_multiple(self, n_images, images, waitForNextBuffer=True):
                     if self.exception_on_failed_shot:
                         raise
                     else:
+                        # stop acquisition
                         print(e, file=sys.stderr)
+                        break