Error ..\helper.php on line 13 and NO IMAGE displa

Hi,

I'm trying to use the "Hot VM scroller" but i obtain this error:

Notice: Constant JPATH_VM_ADMINISTRATOR already defined in C:\xampp\htdocs\sito\modules\mod_vmscroller\helper.php on line 13

I use VM 2.0.26d and Joomla 2.5.19, on localhost (XAMPP).
The debug mode in Joomla and VM is turned off.

How I can fix this problem?

Thank you.

comment out that line by putting // in front

Thank You. Now it work but I have a problem when I open my home page.

Every time that I load a new page (like home or other where the module is displayed), the products pictures is not displayed, like for the module it isn't possible to charge the pics.
I have to wait 1 whole cicle to see pictures charged.

Why? it's a cache problem or a preload problem in JS?

Thank You

Ok, I solved it.

I have re-uploaded the images of all product using "Replace Thumb".

The problem that the thumb images is not recognized I think it's caused from virtuemart thumb source, because for all the products it made a source like this:

The problem it's caused by "(Default URL)" at the beginning of the source path, it's an invalid source.
If you delete it, like this:

and you save it, the thumb image is displayed inside the module.

Thank You again.