Hi Rory,
I had a student experience issues with older code that uses the old method for widgets and channels. The example worked on Cabbage Lite but not the main Cabbage frontend (Windows). When I sent him a version that uses the new method, he said it worked fine. Is it your intention to still support the old method?
Here are the two versions in case you want to test on Windows.
DPOAEs.csd (4.4 KB) DPOAEsQueue.csd (4.6 KB)