Well from the screenshot, there is text on the page saying "enhanced_v1.23" which might indicate that the enhanced theme is not really upgraded since the last skin change was in v1.23.5 I think. I don't know if they include that last digit in the theme version information though.
Another inacuracy, at least on my servers, is the enhanced theme is just named "enhanced" there is no underscore or version in the name, which might also indicate that you would have a corrupted version.
Some things you might try:
1. Delete that skin and then manually update DirectAdmin. The skin might be redownloaded properly
2. Manually install the enhanced skin from a different (working) source, such as another server or from someone on these forums. If you need I can attach a copy.