This thread is resolved. Here is a description of the problem and solution.
Problem:
Custom image size not working anymore
Solution:
The fix for this issue has been shipped with Toolset Blocks version 1.5.
Relevant Documentation:
0% of people find this useful.
This support ticket is created 3 years, 8 months ago. There's a good chance that you are reading advice that it now obsolete.
This is the technical support forum for Toolset - a suite of plugins for developing WordPress sites without writing PHP.
Everyone can read this forum, but only Toolset clients can post in it. Toolset support works 6 days per week, 19 hours per day.
No supporters are available to work today on Toolset forum. Feel free to create tickets and we will handle it as soon as we are online. Thank you for your understanding.
Tell us what you are trying to do?
On the page: hidden link I try to use custom image size 400 x 400 px. When I first build the page it worked, but was not stable. When I had to edit the page I had to reset the cutom image size again and again. Now, while editing the page it does not work anymore. I get an error-message that says: 'Missing information for resizing image' (see screenprint).
I read the help-posts, see below and added code to my 'function.php': image sizes 'first' and 'second' (see screenprint). With regenerate thumbnails I made the two sizes. Still I cannot choose the custom sizes.
What am I doing wrong?
The fix for this has already been prepared and will be included in the next plugin update, expected shortly after Easter, although a beta is due this week.