Thanks Ulrich - I have tried again with a fresh build after merging the changes 
and I can confirm I no longer see the error message.

David

On 02/05/15 11:42, Ulrich Pegelow wrote:
> This has been fixed now in master. Was a stupid bug introduced by my
> commit 7c7040b87b7bb8662f6510dcdddab84262b3a815.
>
> Ulrich
>
> Am 27.04.2015 um 21:00 schrieb David Smith:
>> I suspect this may be a driver issue, but wondered if anyone had any
>> suggestions about an error I see running with OpenCL.
>>
>> The problem is I consistently see this:
>>
>> [opencl copy_image] could not copy image: -30
>> [opencl_resampling] couldn't enqueue kernel! -30
>> [opencl_demosaic] couldn't enqueue kernel! -30
>> [opencl_pixelpipe] failed to run module 'demosaic'. fall back to cpu
>> path
>>
>> Some background: I run darktable on a laptop with a GeForce GTX 860M. I
>> run Ubuntu, and when I was on Ubuntu 14.10 there was no driver installed
>> for the graphics card. When I upgraded to 15.04 there was a driver
>> (NVIDIA binary driver - version 346.59), so I installed nvidia opencl
>> libraries and compiled darktable (darktable-1.6.x branch) and I now get
>> OpenCL available in darktable, but with the above error consistenly
>> appearing when I (for instance) zoom into an image in darkroom. I did
>> experiment a bit with darktable OpenCL settings, but nothing seemed to
>> affect it, and I wondered if anyone had any suggestions of things to
>> try.
>>
>> I have attached a log from running with darktable -d opencl -d perf.
>>
>> Thanks,
>>
>> David
>>




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