Error on BOM Creation

dear all…

we have an urgent bug in here, can anyone advise?

Traceback (innermost last):
  File "/home/frappe/frappe-bench/apps/frappe/frappe/app.py", line 57, in application
    response = frappe.handler.handle()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/handler.py", line 19, in handle
    execute_cmd(cmd)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/handler.py", line 36, in execute_cmd
    ret = frappe.call(method, **frappe.form_dict)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 805, in call
    return fn(*args, **newargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/desk/search.py", line 13, in search_link
    search_widget(doctype, txt, query, searchfield=searchfield, page_len=page_len, filters=filters)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/desk/search.py", line 35, in search_widget
    searchfield, start, page_len, filters)
  File "/home/frappe/frappe-bench/apps/erpnext/erpnext/controllers/queries.py", line 194, in item_query
    "page_len": page_len
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database.py", line 136, in sql
    self._cursor.execute(query, values)
  File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/MySQLdb/cursors.py", line 185, in execute
    for key, item in args.iteritems())
 TypeError: not enough arguments for format string

i have removed all customization for the BOM and reset to default but still the same…

the error shows when i add new material to the BOM…