Latest Update problems

Dear all,
As a user of the EVOLVE theme on my blog, I have uploaded the latest update of your theme today.
However, I had the bad surprise that’is not working, my url went on a blank page.
The message I have on my dashboard is that the EVOLVE theme is “damaged, or incomplete. Style seems to be missing. (see French message below)
Unfortunately, I cannot remove it nor reload it, and therefore I had to install another theme.

Could you please let mo know how to deal with it and be able to use your EVOLVE theme ?

” Thèmes endommagés
Les thèmes suivants sont installés, mais incomplets. Les thèmes doivent avoir au moins une feuille de style et un modèle.
Nom Description
evolve La feuille de style manque.

Many thanks in advance