I tried to install the DNXHR / HD LE codec 2.6.0 (free) version in two systems, both with the same versions of Vegas 13.0 and Premiere Pro 6.0: a desktop with Windows 7 Ultimate and a notebook with Windows 8.1.
The system with Windows 7 hasn`t got the DNXHR option to render / export, only DNXHD; but the system with Windows 8.1 show both DNXHR and DNXHD options.
Is there any incompatibility between Windows 7 and DNXHR codec?
Thanks.

Is QuickTime installed on the Windows 7 machine?

Sure it is, otherwise even DNXHD wouldn`t show up as an option, I gess.
Thanks

I once did a test of DNxHR on my Vegas 13 build 453, Window 7 machine. Seemed to work fine. Quicktime was able to playback the video and MediaInfo identified the file differently than normal DNxHD files.

Thank Norman, but did you see the DNXHR option when you tried te render (QT) the edited timeline?

Thank Norman, but did you see the DNXHR option when you tried te render (QT) the edited timeline?

Yes, of course. Can't render DNxHR without that option showing in the render as template dialog.
All I have done is install Quicktime first and then install the Avid Quicktime codecs and then setup the template in the Vegas render as dialog for Quicktime renders.

Thank you, Norman. Mistery goes on, in my case.

This information may or may not be relevant to your situation - but I have no issues with DNXHR and Avid Media Composer on my Windows 7 x64 machine. Haven't tried it with any other NLEs though.

Sure it is, otherwise even DNXHD wouldn`t show up as an option, I gess.
Thanks
are you running win7x64? Avid requires 64bit OS