Hi,
1. I activated plugin “UNI Cpo” for additional product features.
2. look at printscreen (pic 1), when click on Cpo Builder enter here:
http://www.eden4u.co.il/?product=gro-091&cpo_options=1
3. can not use this plugin (to save changes) and message appear – “Too many cart forms found.”
I guess it’s because product’s basket (cart) appearing twice – it the top and bottom. but may be other reason.

in “26” I checked few times – works normally
http://www.eden4u.co.il/?product=gro-091&cpo_options=1