Miscellaneous
Virtuemart Configuration
The Product Bundles plugin is using some of the Virtuemart's scripts to work properly. These scripts have to be loaded to the product details page.
Please go to:
Virtuemart > Configuration > Checkout and enable the setting "Display modal popup upon 'Add to cart'"
Order of Assignment
In case your products use other plugins (beyond the bundles) as custom fields, the order of assignment of these custom fields can affect the display and the functionality of the bundles plugin in your front-end.
We suggest putting the bundles custom field 1st among your other custom fields.