Hi,

It is likely that you have an Aximmetry camera in your scene that is from a previous version of Aximmetry.
Please add the camera again in the Aximmetry menu:

If this doesn't fix it, try deleting any Aximmetry camera you find in your scene:

And then add an Aximmetry camera from the Aximmetry menu.

Warmest regards,

The latter fixed it.. Thanks.. Just FYI 5.1 had a lot of issues with cooking.. Don't know if it was cos VB was not installed correctly, but I noticed the bundling of VB in your latest 5.2 Axi was more seamless.. Thank you Eifert.