virtuemart feature product grid

This module don't shows me a thumbnail of the product image but left top corner of the big image. I don't know what to do. On boths views (grid or list) shows mi left top corner of the big image.
My Joomla installation 1.5.23

Hello, it sounds as if you need to enable dynamic thumbnail resizing in your Virtuemart configuration.

In your Virtuemart admin go to configuration->site, check the box next to 'Enable Dynamic Thumbnail Resizing?'

Thank You! It solve's my problem