Thank you
I think i have found the problem. I define different bit depths, which are 8, 16 and 32bit.
The 32bit isn´t used. On 2013 and 2014, which i use to test, all works fine because the standard is 8bit and you can switch it to 16bit over the color management.
Maybe on 2015 the highest bit depth is used, which will be the defined but unused 32bit.
Have disabled it now and hope it works.
To test, you can download the plugin dll and replace it with the one in the addon directory.
If it works, i will update the addon in the first post.
face