Thank you.. didn't think about using that.
I used that add-on to install the UI.X theme and it worked fine.. now when I click on it to import a style file.. I get this:
Oops! We ran into some problems.
Cannot install via Install & Upgrade as not all required directories are writable. Various directories must be writable by the web server user to install via Install & Upgrade. In addition to the XF root directory, some or all of the following paths must be writable: js, src/addons, styles, src/addons/ThemeHouse/InstallAndUpgrade/Repository/InstallAndUpgrade.php.
I have used Filezilla to set the permissions of all listed directories to at least 764 or writeable by owner and group.
Still not working.
anything else might be causing this to not work?