Thread: Thumbnails all changed when upgrading to 3.1.9

Thumbnails all changed when upgrading to 3.1.9

I just upgraded (I think from 3.05) to 3.1.9 and all my thumbnails have now been changed to 75 x 75. I had modified so that my thumbs should be 150x100 and I've spent hours trying to work out how to fix this again. Please can someone advise.

I have changed the line add_image_size('sidebar-thumbnail', 50, 50, true); in theme-functions to 150,100, true, but this doesn't help.
http://forums.appthemes.com/resize-f...3-1-9-a-33017/

It did make the thumbnail for a new listing larger, but a) they are still square, and b) it doesn't fix the others.

This is really frustrating. Every time I upgrade it takes so much work to re-do the same modifications because the core code seems to change the way it works each time.

My site is www.superguide.com.au/directory

Thanks in advance for any help.