Posting in the Magento forums has been disabled pending the implementation of a new and improved forum solution which should better serve the community.
For new questions please post at magento.stackexchange.com, the community-run support site for the Magento community. We will be providing updates on the new forum solution soon. For questions or concerns please email email@example.com.
Strange bug with Up-sells, Cross-sells, Related Products, etc.
Hey I had the same error and I found this solution - I had created an arttribute called âformatâ as soon as I deleted that everything worked just fine. Hope this helps somebody, it was really frustrating me.