plugin conflict width product price

Hi
First i want to say thank you for this useful plugin! its work and its what i looking for…
But i have a problem, when the problem is active, if i add and publish a new product, then the product will come without any price, for both simple and variable products.
i checked it with inspect element to and its not about css because the tag <span class="price"></span>comes totally empty! and its just for products that add and published after install and activating “WooCommerce Thumbnails Slider” pluginو and product that published before this(install and activating “WooCommerce Thumbnails Slider”) still come with price and no problem even when the plugin is active.
And after this if i deactivate plugin the problem for new products will solved, product price will display for all products and tag <span class="price"> will come with price codes.