When you open the Extensis font panel in Adobe Illustrator, Adobe InDesign, Adobe InCopy, or Adobe Photoshop, the panel is blank. The first time you open the font panel in Adobe Photoshop, you get an error dialog stating the “Extensis” extension could not be loaded.
This issue happens with Suitcase Fusion 9 20.0.0 and 20.0.1 for Mac OS and Windows, and Adobe Illustrator CC 2018 or earlier, Adobe InDesign CC 2018 or earlier, Adobe InCopy CC 2018 or earlier, or Adobe Photoshop CC 2018 or earlier.
Suitcase Fusion 20.0.2 and later versions address this issue. You can download the latest installer for Suitcase Fusion 9 from https://www.extensis.com/support/suitcase-fusion-9/
Cause of the Issue
The Adobe Creative Cloud applications will not load an extension that is not properly digitally signed; the font panels in version 20.0.1 and earlier were digitally-signed with a certificate that expired on February 11, 2019.