knolly42

That was the only thing that cured it for us. Tried de-activating all the plugins to no avail. I only realised what the issue was when comparing 2 of our 2.7.1 MU installs. I found that one offered all the thumbnail options but the other refused. Only difference between the sites was image sizes. 150 x 150 originals seem to work OK.

Check the Pixel size of the images.

I found that smaller images seem to work perfectly.

Don’t know if it helps and I’ve not established the parameters but I found that the images it would not re-size on our 2.7.1 MU sites were huge – 3000px x 2500 px.

It was driving me nuts till I found a this https://www.vimeo.com/2427969

Make sure the link URL is ‘file’. For me it was blank initially. By default, prior to 2.7 it would point to the file as soon as you’d uploaded.

Having set it to file on the last upload I did it now generates the link to the file every time.

Maybe it remembers your last preference but if you’ve never set it then I suppose it has nothing to remember…? dunno