diff --git a/lib/routes/find.js b/lib/routes/find.js
index a66c4ed9..0f3218dd 100644
--- a/lib/routes/find.js
+++ b/lib/routes/find.js
@@ -36,6 +36,14 @@ findRoute.register = function() {
         responseHelper._enforceSchemaOnObject(resource, resourceConfig.attributes, callback);
       },
       function(sanitisedData, callback) {
+        if (!sanitisedData) {
+          return callback({
+            status: "404",
+            code: "EVERSION",
+            title: "Resource is not valid",
+            detail: "The requested resource does not conform to the API specification. This is usually the result of a versioning change."
+          });
+        }
         response = responseHelper._generateResponse(request, resourceConfig, sanitisedData);
         response.included = [ ];
         postProcess.handle(request, response, callback);
diff --git a/lib/routes/relationships.js b/lib/routes/relationships.js
index 84910d6f..6c03296a 100644
--- a/lib/routes/relationships.js
+++ b/lib/routes/relationships.js
@@ -44,6 +44,14 @@ relationshipsRoute.register = function() {
         responseHelper._enforceSchemaOnObject(resource, resourceConfig.attributes, callback);
       },
       function(sanitisedData, callback) {
+        if (!sanitisedData) {
+          return callback({
+            status: "404",
+            code: "EVERSION",
+            title: "Resource is not valid",
+            detail: "The requested resource does not conform to the API specification. This is usually the result of a versioning change."
+          });
+        }
         sanitisedData = sanitisedData.relationships[request.params.relation].data;
         response = responseHelper._generateResponse(request, resourceConfig, sanitisedData);
         callback();