Hello Nigel,
I tested on a local machine (no remote feature) with my RxTx Ensemble and everything seems to be working. When I inject a sine wave, the slider controls adjust the image to zero. And I don't see a frozen graph display. Note that you can not adjust the image from the control head in a remote setup. Adjust at the remote. If you still have problems, please describe more completely. And send any tracebacks.
Jim
N2ADR
