My Semantic properties are no longer showing up after upgrading

Problem

• I opened my Rhino file and I can no longer see my Semantic document or object properties.
  • Related symptom is being unable to load in a saved Semantic property set.

Solution(s):

• Possible Solution 1:
  • The Semantic window did not properly attach to the Rhino document. Close the window and re-run the “SemanticPanel” command.
• Possible Solution 2:
  • After a Semantic upgrade, it is possible that older properties will no longer ‘deserialize’ from the document because of underlying version differences.
  • Unfortunately, this means the user will need to recreate properties using the current installed version (or re-install the prior version)