@woland Thank you L this is an alternative solution which I hadn't thought about. I'll check this out too. Many thanks!

Simon

@jrhooker said:

<p>The files that gave me error message are just jpgs which seems really strange...
</p><p>Thanks</p>

 I've had trouble with JPEG's which are really large in the past. If they're big ones, try making them as small as you think you can get away with.

Cheers,

Hugh

@codyseehunt

you will find the Mac OS versions here:

https://github.com/ohglobal/NDI-Classify/releases

scroll down to find 1.1 Update (Mac OS) and then click on Assets