Cause
This error occurs when the program cannot open the extension file %1. The error %2 provides additional details from the operating system (e.g., permission denied, or file not found).
Solution
Verify that the extension file is present and readable.
- If the extension is defined with a custom path in the File properties dialog, ensure the path is valid and accessible. See the File properties dialog documentation.
- If the extension is installed via the internal package manager, ensure the installation is complete and the package is available. See the Manage Extensions documentation.