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Problem

The following error message appears when starting CODESYS: The frame window couldn't be created The root element doesn't exist.

Solution

First attempt:

  • Restart CODESYS. CODESYS is now started with the default settings.

Second attempt:

  • Delete the following files:

    • C:\ProgramData\CODESYS*.opt

    • C:\Users\\AppData\Roaming\CODESYS\CODESYS.opt

  • Restart CODESYS. CODESYS is now started with the default settings.

If this still doesn't solve the problem, please contact CODESYS Support: support@codesys.com