task.connect doesn't work

[tfarago]

The example from #349 would do here with this addition before inject:

def callback(task):
    pass

bp.backprojector.connect('processed', callback)

I get a segfault. The same happens when I use bp.output_task.

[matze]

Have you updated everything? If I print the task in the callback function, I see

bp > run()
<OutputTask object at 0x7f725eae4050 (UfoOutputTask at 0x2f8f200)>

However, for some reason that is not printed with the backprojector. But in any case, on my local machine there is no segfault.

[tfarago]

I updated both the core and filters on the ufo server and it hangs there. last thing I see is:

(process:18881): Ufo-DEBUG: Added program 0x7f10f81ee4d0 from `backproject.cl`

On my laptop the same thing now.