Success estimates developed from the 32-Bit versions 4.0 or 4.1 are not backward compatible to the 16-Bit version 3.0 or 3.1. Make a copy of the Success estimate prior to converting it to a more current version of the Success program.

Estimates created with Success 4.1 may be opened with Success 4.0 if the Success project file that has the extension “.ptp” is deleted prior to opening the Success estimate with version 4.0.