Error 500 during installation according to the guide and also https://vimeo.com/59862366 in step adding attribute to product type.
I added product options sets (/admin/commerce/products/option-sets), then I am trying to add attribute to /admin/commerce/products/types/product/fields (Pricing Attributes , Pricing Attributes Widget). Here when I do the submit, it takes me to a new window (field settings) that has only one button: "Saver field setting", after pressing that I get Error 500. I have tried Commerce Pricing Attributes 7.x-1.x-dev, beta4, beta3; none was successful / Commerce 7.x-1.17, Product Option 7.x-2.0-beta1, Product Attributes 7.x-1.0-beta3.