Install Movable type Fails from Script

Movable type seems to be trying to set the master user twice. Perhaps a replace statement would work better here than an insert.

Now installing Movable Type version 4.1 ..

Failed to install script : SQL insert into db (host, db, user, Select_priv, Insert_priv, Update_priv, Delete_priv, Create_priv, Drop_priv, Grant_priv, References_priv, Index_priv, Alter_priv, Create_tmp_table_priv, Lock_tables_priv, Create_view_priv, Show_view_priv, Create_routine_priv, Alter_routine_priv, Execute_priv) values ('localhost', 'sjablonsky\_mt', 'sjablonsky', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y') failed : Duplicate entry 'localhost-sjablonsky\_mt-sjablonsky' for key 1