restore_my_flash problem with my Nios II Development Kit Cyclone II Edition

"restore_my_flash" is not my script.

I follow the "Appendix A. Restoring the factory Configurations" from the "Nios Development Board - Cyclone II edition" reference manual.

--- Quote Start ---

To reprogram the flash memory on the development board, perform the

following steps:

1. Open a Nios II command shell.

On a Windows PC, click Windows Start, point to Programs, Altera,

Nios II EDS <installed version>, and then click Nios II Command

Shell.

2. From the examples directory, change to the factory_recovery

directory for your development kit.

cd factory_recovery/niosII_cycloneII_2c35

3. Run the flash-restoration script:

./restore_my_flash

4. Follow the script's instructions.

--- Quote End ---

The procedure is simple, I only have to launch the script, nothing else. I don't understand what is wrong.