Scale doesn't work under FireFox#Please, check if you have Flashblock plugin installed and enabled.
If plugin is enabled:
- Go to <Menu> Tools -> Add-ons.
- Select Flashblock plugin and click Options. Flashblock Options dialog will open.
- Check that Whitelist of allowed sites contains www.simflexgroup.com.
- If it does not contain - copy there the address www.simflexgroup.com and click Add.
- Close the Flashblock Options dialog with OK. You can close the Add-ons window also.
- For best result, please, reopen the FireFox and open Tutorial page again.