ZoomText DCM chain errors

Problem

When opening ZoomText you may get one of the following errors:

• “An error has occurred in the DCM chain.”
• “ZoomText has corrected an error in DCM chain. You must reboot your system before running ZoomText.”

Solution

1. Press the Windows Key + R.
2. Type regedit and press Enter to open the Registry Editor.
3. On the left, navigate to:
   HKEY_LOCAL_MACHINE > System > CurrentControlSet > Control > DisplayChaining
4. Right click on the “Display0” entry and click Delete.
5. Close the Registry Editor.
6. Go to the following folder:
   C:\Windows\System32
7. Delete the “dcmc0d0.dll” file.
8. Update your graphics card drivers.
9. Restart the computer.
10. Run ZoomText and you should see the following message:
    “ZoomText has corrected an error in DCM chain. You must reboot your system before running ZoomText.”
11. Restart the computer and try running ZoomText again.