The best advice is to simply do a fresh install of BeerSmith. Rename your Documents/BeerSmith2 directory, before installing to keep your recipes and custom profiles. Then restore it after installing.
Attached is the list of default profiles as I have them. This file belongs in the Programs/BeerSmith2 folder.
If you place it in the Documents/BeerSmith2 folder it could overwrite your custom profiles. However, those are backed up wit a number, as Equipment1 Equipment2, etc.