You see the below message in a SharePoint view:
One or more field types are not installed properly. Go to the list settings page to delete these fields.
You see the below message when working with a SharePoint list:
Guid should contain 32 digits with 4 dashes (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx).
The view or list being displayed or used includes lookup columns in a BrightWork list to a column in a BrightWork list that does not exist.
Certain BrightWork lists contain lookup columns to columns in other BrightWork lists. For the lists containing the lookup column to function correctly, you must either delete the lookup columns in the original list, or create the list(s) containing the columns looked up to and run the BrightWork List Lookup settings repair utility - the latter procedure is described below.
Click here to see a table displaying BrightWork lists and their respective lookups.
Note: This error message and repair procedure only applies to pre-existing lookup columns in BrightWork lists. It does not apply to lookup columns that you add yourself.
If you create a BrightWork list in a web containing at least one lookup column to another BrightWork list, you must also create the list(s) that it looks up to and then use the BrightWork Lookup settings page to repair the broken lookup(s).