If you used the Google/NIK plugin with a host program, it might be useful to mention that as well, because some host programs create non-standard/uncommon TIFFs (with alpha layers and or thumbnails, etc.).
Cheers,
Bart
Not shure what You mean.
C1 is the host programm, i think.
I check the past and find that I have use Canon EOS 5DMIII with Silfer Efex Pro for 15 times very well.
I hope I found the solution.
In setting of using Silfer Efex Pro is format TIFF and 16 bit.
When I use format TIFF and 8 bit it works.
Later I will examine again.
Cheers
Jochen