Can I have multiple versions of SigmaXL installed on the same computer and run them at different times?
No. Only one version of SigmaXL should be installed on the system at any given time.
All SigmaXL installations require that any existing versions of SigmaXL are uninstalled prior to the installation.
SigmaXL upgrades are not installed "over top" of previous versions of SigmaXL.
Please uninstall your previous version of SigmaXL before installing the new version.