diff --git a/api/orders/setLineItem.cfm b/api/orders/setLineItem.cfm
index 3422194..fa98295 100644
--- a/api/orders/setLineItem.cfm
+++ b/api/orders/setLineItem.cfm
@@ -460,24 +460,30 @@
       <!--- Deselecting: check if this is a default from an inverted group --->
       <!--- If so, keep it with Quantity=0 for "NO X" display; otherwise delete --->
       <cfset var isInvertedDefault = false>
-      <cfif qItem.recordCount GT 0>
-        <cfset var qParentItem = queryTimed(
-          "SELECT IsInvertedGroup FROM Items WHERE ID = ? LIMIT 1",
-          [ { value = qItem.ParentItemID, cfsqltype = "cf_sql_integer" } ],
-          { datasource = "payfrit" }
-        )>
-        <cfif qParentItem.recordCount GT 0 AND val(qParentItem.IsInvertedGroup) EQ 1>
-          <!--- Check if item was a default --->
-          <cfset var qItemDefault = queryTimed(
-            "SELECT IsCheckedByDefault FROM Items WHERE ID = ? LIMIT 1",
-            [ { value = ItemID, cfsqltype = "cf_sql_integer" } ],
+      <cftry>
+        <cfif qItem.recordCount GT 0 AND val(qItem.ParentItemID) GT 0>
+          <cfset var qParentItem = queryTimed(
+            "SELECT IsInvertedGroup FROM Items WHERE ID = ? LIMIT 1",
+            [ { value = val(qItem.ParentItemID), cfsqltype = "cf_sql_integer" } ],
             { datasource = "payfrit" }
           )>
-          <cfif qItemDefault.recordCount GT 0 AND val(qItemDefault.IsCheckedByDefault) EQ 1>
-            <cfset isInvertedDefault = true>
+          <cfif qParentItem.recordCount GT 0 AND val(qParentItem.IsInvertedGroup) EQ 1>
+            <!--- Check if item was a default --->
+            <cfset var qItemDefault = queryTimed(
+              "SELECT IsCheckedByDefault FROM Items WHERE ID = ? LIMIT 1",
+              [ { value = ItemID, cfsqltype = "cf_sql_integer" } ],
+              { datasource = "payfrit" }
+            )>
+            <cfif qItemDefault.recordCount GT 0 AND val(qItemDefault.IsCheckedByDefault) EQ 1>
+              <cfset isInvertedDefault = true>
+            </cfif>
           </cfif>
         </cfif>
-      </cfif>
+        <cfcatch>
+          <!--- On error, default to normal delete behavior --->
+          <cfset isInvertedDefault = false>
+        </cfcatch>
+      </cftry>
 
       <cfif isInvertedDefault>
         <!--- Keep in cart with Quantity=0 for "NO X" display --->