Unable to change admin password from GUI

Hi all

Getting this Fatal Error when trying to change the admin password:
Hope somebody can shed somelight. FreePBX v2.2

Thanks

INSERT INTO ampusers (username, password_sha1, extension_low, extension_high, deptname, sections) VALUES (‘admin’,‘a890266c0063651227aa50d399a84505e80f0324’,’’,’’,’’,’’); [nativecode=1062 ** Duplicate entry ‘admin’ for key 1]SQL -
INSERT INTO ampusers (username, password_sha1, extension_low, extension_high, deptname, sections) VALUES (‘admin’,‘a890266c0063651227aa50d399a84505e80f0324’,’’,’’,’’,’
’);
Trace Back
/var/www/html/admin/libraries/sql.functions.php:11 die_freepbx()
[0]: INSERT INTO ampusers (username, password_sha1, extension_low, extension_high, deptname, sections) VALUES (‘admin’,‘a890266c0063651227aa50d399a84505e80f0324’,’’,’’,’’,’’); [nativecode=1062 ** Duplicate entry ‘admin’ for key 1]SQL -
INSERT INTO ampusers (username, password_sha1, extension_low, extension_high, deptname, sections) VALUES (‘admin’,‘a890266c0063651227aa50d399a84505e80f0324’,’’,’’,’’,’
’);

/var/www/html/admin/modules/core/functions.inc.php:4085 sql()
[0]: INSERT INTO ampusers (username, password_sha1, extension_low, extension_high, deptname, sections) VALUES (‘admin’,‘a890266c0063651227aa50d399a84505e80f0324’,’’,’’,’’,’*’);
[1]: query

/var/www/html/admin/modules/core/page.ampusers.php:83 core_ampusers_add()
[0]: admin
[1]: test123!
[2]:
[3]:
[4]:
[5]:

/var/www/html/admin/config.php:317 include()
[0]: /var/www/html/admin/modules/core/page.ampusers.php