Creating, Importing or Exporting ISM Repositories to and from ProStructures via the Structural Synchronizer (11.04.01.04) fails and throws up an Error Message as below -
1) Uninstall the Structural Synchronizer (11.04.01.04) on your machine.
2) After this, install the earlier version of Structural Synchronizer i.e. version # (11.00.03.04)
This should resolve your issue and you will be able to create and import/export the ISM repositories as normal.