In the right column:
Warning Notice:
If you have a fresh install of CMSMS 1.10.x or greater, not an upgrade, some of these themes will give a smarty error related to {stylesheet}, this plugin has been removed from CMSMS distributions. use {cms_stylesheet} instead.
a) Open the template of the theme;
b) Search for {stylesheet};
c) Replace {stylesheet} with {cms_stylesheet};
d) Save template;
e) Open style sheets and change image calls:
old url(uploads/folder/image.jpg)
new url([[root_url]]/uploads/folder/image.jpg)