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Receive similar error publishing Inventor files in Vault (locally) running Vault 2011, Inventor 2011. I think it is related to File Registry as I am also running Factory Design Suite 2013 with Inventor 2013 Professional.
Icons for Inventor files are for Inventor Pro and are different than when only 2011 was installed. The interesting note here is that I have been using both versions for a while and only the last two days have noticed that I was unable to publish files in Vault. Have not been successful in changing the registry to set Inventor files to open in 2011.
Don't know if that helps because I am looking for resolution to this issue as well.
Thanks