[Bug 1490361] Re: IncompatibleObjectVersion: Version 1.2 of PciDeviceList is not supported

[Tobias Urdin]

I had the same issue after upgrading nova components. 
The issue was that nova-conductor and nova-compute services did not use the same version.

I upgraded using apt-get upgrade but it didn't seem to update nova-
conductor. After a apt-get -f upgrade nova-conductor the nova-conductor
package was upgraded to same version as nova-compute and then it worked.
Confirm by checking the package versions (dpkg -l | grep nova).

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https://bugs.launchpad.net/bugs/1490361

Title:
  IncompatibleObjectVersion: Version 1.2 of PciDeviceList is not
  supported

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