How to resolve 'Unknown data property commerce_product' when adding a product in Drupal Commerce?
Looks like an answer to "this" question might be similar to what I suggested in How to add Drupal Commerce to an existing Drupal site?, which originally was rather a request for manuals/docu about this topic. It has a comment (from the OPer) like this (bold markup added here now):


  ... After your post I've uninstalled all modules and installed again and still had the errors, however this time when I run Commerce Repair the fields were fixed and everything worked.


With that it appears to me that "this" question "has an answer" now also.

Ps: The "Commerce Repair" module is "looking for a new maintainer", and used in over 1.000 sites. To me it appears as the best possible alternative to consider, which is not the same as "the module is no longer maintained" I believe (as I read in a comment to the question here).