I changed GPU's from a 7970 to R9 290, and aborted the task queue that was there in case they were specific to the old GPU.
I've rebooted, updated project, reset project detached and reattached and it won't get any tasks.
In the message logs it can see the OpenCL 2.0 drivers and on the computer/account you can see it also recognizes the GPU.
The machine is 483509.
Could you please have a look/suggest what to try?