integration with woocommerce problem

Trying to get shiprush to pull orders from back end, getting this error message:

Unable to download orders from -redacted-. ERROR: SHIPPINGZCLASSES Version: 3.0.7.3941 Error Type: 8 File: -redacted-/ShippingZWoo.php Line: 637 Message: Undefined property: stdClass::$product Trace:
? Unable to download orders from -redacted-. ERROR: SHIPPINGZCLASSES Version: 3.0.7.3941 Error Type: 8 File: -redacted-/ShippingZWoo.php Line: 637 Message: Undefined property: stdClass::$product Trac