Is it safe to delete a bID from `btProductList` through the database without wrecking my entire site

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I have a site which has started throwing up this Error:
Fatal error: Call to a member function getProductSetID() on a non-object in /home/museb/public_html/shop/packages/core_commerce/models/product/list.php on line 56

GregJoyce has helped me locate that it's a Set error within eCommerce that is causing this. I've viewd source for the error and I see this
</script><div id="b404-549" custom-style="0" class="ccm-block">   <br />
<b>Fatal error</b>:  Call to a member function getProductSetID() on a non-object in <b>/home/museb/public_html/shop/packages/core_commerce/models/product/list.php</b> on line <b>56</b><br />


I'm a designer not a developer so I'm not hugely comfortable in PHPMyAdmin but I've figured out that 549 is the unique Area on the page and that the productlist is 404. I've found both of these in the MyAdmin. If I delete the productlist through PHPMyAdmin will it fix the broken page?

PassionForCreative