The COPASI team announces the immediate availability of the stable release COPASI 4.40 (Build 278).

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.

Release Date: May 31, 2023

New Features

• The is a bug fix release and does not include new features

Bug Fixes

• Graphical User Interface (CopasiUI)
  • Fixed issue where loading a parameter estimation protocol in which the values had been sorted externally lead to incorrect parameter mapping.
  • Show both modification and creation time entities in local time.
  • Fixed plot for parameter estimation results for steady state experiments to properly map the independent data.
  • The parameter estimation result now includes a counter for failed constraints.
  • Fixed crash when deleting all global quantities.
• Simulation Engine
  • Fixed temporary directory for export of Combine and Shiny archives to address security restrictions on MacOS X.
  • Stochastic simulation methods now correctly report whether they support events and thus whether they can be used for the simulation of model with events.
• Standards
  • SBML import: Fixed issue where it was not possible to change the delay of an imported event.
  • SBML import: Fixed crash caused by particular unit definitions during importing.
  • SBML import: Fixed import of reaction kinetics which occasionally lost the parameter mapping.
  • SBML import: Handle references to missing modifier species in reactions gracefully.
  • SBML export: Reduced warnings about Model History not being exported to only check the model itself and not all model components.

More information can be found in the changelog.