First time installation: This package may contain: APCalc.prc (works on both B/W and Color devices) 1) Install APCalc.prc (for color or B/W devices) 3) Install MathLib.prc 4) Install APcalDB.prc (install this for 15 day trial) If you are just updating: 1) Don't delete old version 2) Install only the APCalc.prc 3) If you delete the old version, or install the APCalDB.pdb file, you will overwrite your program database. If you have any problems or questions, contact me at: ipscone@halcyon.com Mike Davis