Troubleshooting
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- Troubleshooting Checklist
- My page is slow to load or stuck on loading
- Is My Browser Supported?
- I Can't Sign in to CK-12 with My Login Credentials
- I Can't Access the CK-12 Site
- Trouble with Saving or Displaying Content
- Videos Are Not Playing on My Windows Device
- Equations Do Not Display Well on My Ebook Reader (e.g. Kindle, Nook)
- Error Message: "Cannot save because an artifact of this name already exists."
- Error Message: "You are reading an older version...Please edit the flexbook to update this concept."