I have been able to do this for a while now but it seems to have stop all of a sudden. Here goes:
When I login to expression engine at the backend - I cannot login to the front end with the same credentials - I get the following message:
MySQL ERROR:
Error Number: 1054
Description: Unknown column 'username' in 'where clause'
Query:
SELECT count(*) AS count
FROM exp_password_lockout
WHERE
login_date > 1384272605 AND
ip_address = 'xx.xx.xx.xx' AND (
user_agent = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/53' OR
username = 'admin'
)
The same thing happens visa versa (When I can login to the the front end but not the back end).
Please help
The error below is known as Bad Field Error:
Unknown column '%s' in '%s'
So that means that some column refenced in the query was not found on any table of the same query. In order to reference a field in a SQL query, that field must be in a referenced table or the engine will throw that exception.
So double check if your table has that field, probably you'll realize that it does not.
I hope this helps.