New thumb size is not taken over

Hi,

I changed the thumb size in our DEV system, but the new size is not taken over by the plugin. I have cleared the image cache and also the cache and also tested this in several browsers. Does the thumb size have to be passed somewhere else specifically (like “thumb”, “medium”)? Whereby “medium” is out of the question anyway, it’s all about “thumb”.

WP and Plugin are up to date.

Thanks a lot!