Make a copy of your elkaccts2.mdb file and save to a new location then from the Windows Add/Remove Programs select ElkRP2 click Remove at which point you should be prompted to Remove, Modify or Repair — select Repair then try the RP2 2.0.40 update. If unsuccessful you may have to completely remove RP2 2.0.36 search your local c drive for the RP folder and if found delete it before downloading 2.0.40