After many issues, I uninstalled Themler.
I tried to download the latest Windows desktop-version from the website, but that doesn't work:
https://getthemler.com/Themler2.1.0.441.e3ce2.exe
This...
"Sorry, an error has occured. Please use FTP for downloading theme". Thats the message i get after creating a theme using my local themler installed on windows 8.1. How do i go about using FTP...