What to do if you get this error:

SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`framese1_frames/catalog_product_bundle_selection`, CONSTRAINT `FK_CATALOG_PRODUCT_BUNDLE_SELECTION_PRODUCT` FOREIGN KEY (`product_id`) REFERENCES `catalog_product_entity` (`entity_id`) ON DEL)

Solution - check that all the SKUs exist in the bundle_selections (check spelling).