tried to update a driver now it says… tried to update a driver now it says parameter is incorrect and idk how to fix it

bad buy purchase driver update $49.00. after filling form my credit card info slim driver pop up.I don't want anything else but one yr. driver update.they never gave me any comfirmation number or chance to use the special coupon @19.95 so please cancel everything but driver update for one year and its not working right right now

not happy Too companies many send reply's and messages from a no reply address. This is just wasting time..

did not work as slimdrivers claim. did not work as slimdrivers claim, kept doing update on drivers that was already updated.

Worth the price I use this program all the time. It never gets all the drivers and often gets the wrong ones. But it does whittle down the number of drivers I have to find by other programs/websites.