Cannot delete a self created shopper field VM 2.0.2

[John2400]

Joomla 2.5.1

* I created two shopper fields ( both emails) - the first one I gave a new name called eeeemail and the second I made a mistake and type just email.
The computer then recognised the dual field names and added a few numbers to the name.

later I tried to delete both.

* the one with the eeeemail name was deleted . The one which the computer generated the name itself I cannot delete. The message reads -
vmError: TableUserinfos::modify table - Can't DROP 'email190133676'; check that column/key exists SQL=ALTER TABLE `jos_virtuemart_userinfos` DROP email190133676
vmError:
Userfield could not be deleted.


I unpublished the field so it is still there but I think it might need  a look at.