th-ERP: ERP POS stock accounting payroll

i install it. but problem is here. it says. i delete the table 'rangeset' but this error is again showing.


Technical error

SQL error: Table 'rangeset' already exists
SQL errno: 1050

SQL:
create table rangeset (
rangesetid integer not null,
name varchar(20),
description varchar(80),
primary key (rangesetid)
) ENGINE=InnoDB DEFAULT CHARSET=utf8


pls help.