Subcategory grid layout

[earmsby]

ZC Version: 156a / 157d
PHP Version: 7.2.34
Theme: customized version of Responsive Classic

I am in the final stages of upgrading a client's 156a shop to 157d. Almost everything is displaying as expected. The one issue I'm having is with the display of subcategories. Here is a link to the live shop: http://store.subitomusic.com/index.p...=index&cPath=1 and here is the same page on the upgraded shop: https://subitomusic.com/zc_157D/inde...=index&cPath=1

I haven't had this issue come up with several previous similar upgrades so I'm not sure where to look. I can see that a width on each categoryListBoxContents div is being set on the live shop but not on the upgraded site. I've looked in config settings to see if something was missing there and I also did some searching in Developers Tool Kit to try to identify a file that perhaps I missed customizing during the file comparison stage.

And advice where to look for what controls this?

[earmsby]

Solved it myself. Error log showed a warning about division by zero in includes/modules/category_row.php. Closer inspection of that file revealed an old modification that was subtracting 2 from the width for some reason. Deleting that solved the problem.

[dbltoe]

Thanx for letting folks know the solution.