I was able to apply the “Set Slider max-height” changing also the value of “Set Slider max-width”
I have the same error. I follow your suggestions but the changes not are applied to the page, only in the preview. I disabled any other plugin. Other changes as the automatic slider are correctly applied. Also, my wordpress is in spanish, all other except the “extended” options are in spanish, the plugin options are in english.
Thanks
M.A.R.C.