Hello, in all other themes I can but not in Zen page. The Default image display size so that I can define the height, width, shortest side, or the longest side will be equal to image size is greyed out. I changed in MySql Database, I can see the new Size, but the script doesnt take it. I need to display a 250px picture, but it displays the 580 whatever I do.

<img src="/zp-core/i.php?a=MyPicture;i=01-DSCF0066.JPG&w=580&h=576&cw=0&ch=0&q=75&wmk=%21&check=77a10fd938f6bed358903d3a7a43ea35df1036fc" alt="01-DSCF0066" width="580" height="576">

The Zenpage theme has fixed image sizes built in for layout reasons. Therefore the option is greyed out as they won't work anyway.

Thank you. Is there a way around it please?

Yes, create your own customized version of the theme.