- Graphical User Interface (CopasiUI)
- Impproved the cross section task interface to be more intuitive.

- SBML
- Enabled export of models which use initial values of species, compartments or global quantities in mathematical expression.

- Graphical User Interface (CopasiUI)
- Fixed problem causing a crash in the slider dialog when the tool "Convert to irreversible" was used.
- Improved performance of large list of sliders on Windows 8.

- Simulation Engine
- Fixed problem when loading CopasiML files which contained nested groups.
- Fixed crash when exporting a model which contained an event without any assignments.
- Fixed the calculation of the standard deviation and RMS in the parameter task fir the case where the experimental data contained missing values.
- The subtask of the sensitivity is now always performed with the update model flag set to false.
- Fixed problem in the result display of the time scale separation task which could lead to a crash if the task itself failed.
- Fixed problem in the calculation of the Fisher information matrix which ignored the weights in the objective functions.
- Fixed stochastic simulation to stop if a propensity evaluates to NaN.
- Fixed problem in the parameter estimation task when validation data was present.

- SBML
- Fixed SBML import of function definitions specifying unused variables.
- Improved import of functions reducing the number of duplicates and simultaneously preserving the name.
- Improved import of irreversible reactions in which the product contributes to the kinetic law and is listed as a modifier.
- Create a warning message if the model contains an invalid function definition and cannot be exported.

- Language Bindings
- Fixed various crashes in the Java binding caused by the retrieval of non existing objects.