I have been an Xact user for years and downloaded the 30-day trial of Simsol. Installed it and started to familiarize myself with its components. Then, I needed to use Penpro also to write a vehicle estimate. Would not work. Apparently, Penpro and Simsol use a similar databse engine and Simsol prevented Penpro from running. I had to uninstall Simsol and delete a command line in the MDE Administrator in order to get Penpro to run again. Any idea on how to allow both to run on same laptop?