5.12 - Rebuild medium creates full size image(NOT A BUG)
 

On my install of 5.12 medium images are correctly created when uploading new images. When running rebuild mediums the medium generated is the same as the full image, but is displayed by show photo with the medium width and height tags.

Attachment one is screen grab just after uploading image.
Attachment two is screen grab immediately after running resize mediums.

Note the file sizes. Full size image is being squeezed into medium display area.

Can you provide a link so we can be sure it isn't a browser caching issue?

It's on a local server for dev, not a live site. I'm sure it's not a caching prob. Tried it in both IE and Firefox.

Since I posted though I had a look in the data dir and there's a bunch of .mgk files, so I'm thinking IM is having a prob. Switched to GD2 and resizing mediums is fine. So I guess it's a prob at my end, not a bug. Sorry about that.

No problem, make sure you have a current version of IM if you plan to go back (GD2 is just as good, IMO; maybe better).