VirtueMart: problem with user registration

[alessandropighi]

Hello,
I am currently working with VirtueMart 3.0.12 and Joomla 3.4.8

My problem is that... when I try to register as a new user once I click on the "register" button the only thing that happens is that reloads the page without the control of the fields.
I already enabled the debug mode and I understand (I think) the problem is the function is not invoked on the JavaScript validation of the form ...

To check the operation of JS I tried to rename the function to MyValidator(f, t) to myValidator_tmp(f, t) and at least the function is called but then stops at the line <f.task.value = t>

before that line I put various alert() inside the function to find where function stop and... someone has already had a similar problem?

I tried to search with Google in your forum but couldn't find anything about it.

Thank you in advance hoping someone will give me help

[Jumbo!]

Make sure "New User Registration" option is enabled in Joomla User Configuration.

[alessandropighi]

Unfortunatly i have just check... The function is enabled

[alessandropighi]

Nobody can help me?