This Patch is for Micro Measure IV - Windows Version 5.00 Only !!! Do Not Unzip it on any other version. The version can be checked from the MMIV SOI window at the info icon (top right). It includes all patches for Version 5.00 prior to April 3, 2003. This patch corrects the following MMIV Version 5.00 problems: Stat file formats so that they can be read by Datapage for windows. MIN_CIRC and MAX_INS subroutines were giving the error "FILE NOT FOUND" Previous fixes in this patch: Corrects a problem with the ACR1 toolchanger rack communications. To install: Unzip each of the files onto the drive mm4 is installed on. Set "Extract to:" to the drive letter mmiv is installed on (C:, D: ...) "Use Folder Names" should be checked