Before attempting to install the Jasperactive Create extension, verify that Adobe Creative Cloud and the applicable course product, such as Photoshop, are correctly installed and can be launched successfully on each applicable machine.
One indicator that this may be an issue is the error message below.
If this error is encountered, reference the following documentation from Adobe.
Adobe Support article - Installation issues with Creative Cloud app extensions and plugins
Jasperactive Create - Getting Started instructions
Installing Jasperactive Create for Photoshop on Windows
Installing Jasperactive Create for Photoshop on Mac