Invalid Company data….Eoor:Open:session no longer valid

Shutdown and restart your computer. After restarting, look for the Pervasive Database - Pre-Load icon in the Taskbar. If it is not visible, you will need to uninstall and reinstall Pervasive.
21st Century Accounting Knowledge Base
https://www.c21accountingsoftware.com/kb/
https://www.c21accountingsoftware.com/kb/viewtopic.php?f=26&t=53