I am getting various readings from 1.0 - 190.0+ when I touch the leads.Then it sounds like something is wrong with the meter. It should read very close to zero ohms when the leads are touched together, and the reading should be steady aside perhaps for a fluctuation of 1 count in the least significant digit.
All I can suggest at this point is to try the suggestions made by Peter (pbnaudio) and Paul79.
Good luck. Regards,
-- Al