There are no new features in this release.This is a bug fix release for COPASI 4.3 (Build 25)
Bug Fixes
Graphical User Interface (CopasiUI)
Initial expression depending only on fixed numerical values are now properly updated.
Fixed problem which may lead to a crash when running the Mass Conservation task.
Fixed crash in the dialog for specifying the experimental data of the parameter estimation which occurred in rare cases.
Fixed problem where cut and paste of mathematical expressions for ODEs assignments and initial assignments could lead to spurious results after committing the data.
Simulation Engine
Fixed possible crash in MCA calculation which may occur if the model contains species of type ODE or assignment.
SBML
Fixed multiple use of the same SId in SBML exports. This problem only occurred when the model has been previously imported from SBML.
The constant flag is now set correctly if a species is changed from constant to determined by reactions in COPASI. This problem only occurred when the model has been previously imported from SBML.