The error message "cannot save scanned image" could be due to various reasons such as incorrect settings, lack of permissions, or a glitch in the software. It is recommended to double-check the scan settings, ensure that you have proper write permissions for the destination folder, and try restarting the software or your computer. Additionally, you may want to contact Epson support or refer to their documentation for further troubleshooting steps specific to the EPSON Scan 2 program.