This is a bug fix release, there are no new features in this release.
Bug Fixes since COPASI 4.11 (Build 64)
Graphical User Interface (CopasiUI)
Fixed crash when editing experimental data in the parameter estimation task. The crash occurred when deleting an experiment, which was specifically listed in an parameter as affected experiment.
SBML
Fixed crash, which occasionally occurred when importing an SBML file created with CellDesigner under Linux and Mac OS X