I am using a Magento 1.9.1 installation with Ultimo Theme. It is running two websites at the same time. This has been working for two years.
Recently, I decided to create a whole new website on the same installation. Unfortunately, all special characters and icons appear as blank squares (similar to ❏) on the new website. I think these characters and icons are provided by Font Awesome.
While the new website looks broken this way, the two old ones don't have the error.
Is there anything I have done wrong to get this result? Is there any quick solution for that?
If not, is there any way to copy entirely a website into another website to avoid the problem?