Preview of theme that is not displayed • WordPress Help

There are times when you install a new theme in your WordPress, go to the administration panel, click to see how your blog will look and ¡ZAS! is not seen, the preview comes out completely blank . Something like this is what has happened to the developers of the WP Contempo theme .

Well, the solution is almost ridiculously simple. It turns out that it seems that Automattic guys do not like folders whose names contain spaces and if they do not show the preview, that's as simple as that. If you have a theme that does not show the preview you just have to change the name to the folder so that it does not contain spaces, for example from " Style WP " to " Style_WP " or " StyleWP ", and it will be previewed.