"No Such Object"

There is a user that is getitng an error when attempting to revision tags.  Others do not appear to get this error when attempting the same command.  I thought it might be a permissions issue but it does not appear that is the case.  Any Ideas?  System is 15.4.1, User is using Engineering Designer.


Erorr is seen sporadically between mutliple users...  Retrying continually until it actually updates does work but ridiculous.