jquery-ui.css interferes with Smartmenus

[RayGX]

I've been using Smartmenus for years without issue. I just added some php script to a page that includes the jquery-ui.js library, which utilizes the jquery-ui.css style library. The jquery-ui.css library completely disables the Smartmenu (commenting it out re-enables the Smartmenu but then disables the new routine).

I have looked for common style definitions between the conflicting css files so I would know where the issue was but there are none. Has anyone else run into this issue and if so, have you found a fix? The Smartmenu I am using uses sm-mint.css in addition to sm-core-css.css for style as well as operation.