DynamoDS/Dynamo — pull request #1631 by ke-yu (2014-05-07 09:11:28+00:00)
Title: Resync custom node defintion if it is updated before open .dyn file

To fix the issue that open a .dyf file firstly, modified it and open .dyn file which contains the corresponding custom node instances, but those instances don't updated to reflect the latest change.