If you’re creating your own wordpress theme, say for a site, it will not recognize the theme if the Theme name consists only of integers. For your theme to distinct from other themes, you have to provide a name in your “style.css” file. E.g.,
/*
Theme Name: 1234
*/
Theme Name: 1234
*/
The above name will not work. Took me about 20 mins of messing around to realize what was wrong. You can append that title with text and it will work. E.g.
/*
Theme Name: 1234 <em>foo</em>
*/
Theme Name: 1234 <em>foo</em>
*/
[...] the original: Numbers don’t work as wordpress theme names Related [...]