Error in Joomla / Admin / SMF registration configuration

[erosolmi]

Hi all,

this is my post in this forum. Hope not to add something already solved. I've searched but not found a solution.

Just installed Joomla 1.0.7, SMF 1.1 RC2 with com_smf components
When I go to Joomla admin under "Components / Simple machine forum registration / Configuration" I got the following error:

Notice: Undefined variable: cb_reg in D:\Inetpub\vhosts\Joomla\administrator\components\com_smf_registration\admin.smf_registration.php on line 120

I've solved other problems following this forum indications but I'm not able to find a solution to this this error.

Thanks in advance for any help.
Regards
Eros