Reporter Info
- Materia version: 20200320.0ubuntu1
- GTK3 version: 3.24.20
- Distribution (and version): Ubuntu 20.04.4 LTS
- Desktop environment (and version): GNOME 3.36.8
- Related application (and version): Google Chrome 101.0.4951.41
Actual Issue
Trying to install either the chrome-scrollbar.crx or chrome-theme.crx fails with the error message in the title.

Steps to Reproduce
- Drag either
chrome-toolbar.crx or chrome-theme.crx from /usr/share/themes/Materia/chrome/ into Google Chrome or Chromium as per README instructions
- Get the error depicted in the screenshot
Additional Info
I have encountered this issue on two separate boxes. One running CentOS 7 with Chromium and Chrome, and this Ubuntu 20.04 box with Chromium and Chrome as well.
It doesn't matter which variant of Materia I use, none of the crx files will install and throw the same error.
Reporter Info
Actual Issue
Trying to install either the chrome-scrollbar.crx or chrome-theme.crx fails with the error message in the title.

Steps to Reproduce
chrome-toolbar.crxorchrome-theme.crxfrom/usr/share/themes/Materia/chrome/into Google Chrome or Chromium as per README instructionsAdditional Info
I have encountered this issue on two separate boxes. One running CentOS 7 with Chromium and Chrome, and this Ubuntu 20.04 box with Chromium and Chrome as well.
It doesn't matter which variant of Materia I use, none of the crx files will install and throw the same error.