A new release of COPASI has been made available. Please visit our free download page to retrieve this latest development release. Please note this version is released under the Artistic License 2.0, which is an OSI approved license. This license allows non-commercial and commercial use free of charge. This is urgent bug fix release some issue in COPASI 4.33 (Build 246):
Release Date: August 12, 2021
More information can be found in the changelog.