I am copying this question from https://stackoverflow.com/questions/25900553/unable-to-add-field-on-drupal-7-view as I can't see a move option sorry.
This has been driving me crazy, so let me explain why.
I am building a Drupal 7 site using kickstart commerce, I have been adding fields to the view for checkout, cart and orders fine.
But all of a sudden it seems to do nothing. Let me explain further.
In the edit view page, I click on Add to add the field I want.
I then find the field I want to add and then click on 'Add and Configure fields'
Then normally I would be able to configure the field, however that has now stopped. Instead I just get the loading symbol and then nothing no configure pop-up or the field added.
I dont understand why this suddenly stopped working, I have cleared the cache and disabled non-required modules, no luck. The fields are configured/added in the same way apart from being different the method they were created in was the same, I have deleted the fields and re-created them still no luck.
Has anyone had this with Drupal 7 or can give me some indication which direction to go in next, thanks in advance.
As I stated on the stack overflow question, its not a relationship things as fields configured the same way are able to be added. Existing fields can be removed and added ok.
If I rename to something like test it still fails to add.
I have checked modules that were installed after i noticed the issue, the only one i could see was context disabling this had no effect.
All out of ideas, Google has been no help either :-(
A further update to my question I just updated to the latest commerce kickstart(commerce_kickstart-7.x-2.17) and this did not help at all. The issue still remains.