Author: Iain Dunning

We are pleased to announce the release of OpenSolver 1.5!

This is a bug-fix release:

• Re-compiled CBC so that it does not have any external dependencies.
• Fixed an error with cells formatted as currency or date.
• Fixed some localisation-related issues with tolerance/ratio gap.

Thank you for submitting bug reports – they are very handy in solving problems. With so many different system configurations out there, it can be tricky to test even a fraction!

We are pleased to announce the release of OpenSolver 1.4!

For a full changelog, please see the document in the download.

• Fixed 2003 menus – version 1.3 had some issues remaining.
• Fixed some issues with and streamlined AutoModel
• Fixed a ref-edit related focus bug in Model tool that was causing some strange behaviour.
• Added partial locale support to Model. Entering number like 180,2 will work, but will display as 180.2
• Added an Options window, available under Model in menu, and from a button on the Model form.
• Added error catching in int/bin constraints on non-decision variable cells.
• Updated CBC to version 2.7
• Added custom icons for toolbar!

As always, please report any bugs via email or as comments.

We are pleased to announce the release of OpenSolver 1.3 beta!

Big features in this release are:

• Excel 2003 menu support, thanks to Paul at Eclipse Engineering. Eclipse Engineering provide high-end CFD and FEA analysis along with a host of highly specialized CAE-based automation and integration solutions.
• Support for 64-bit Excel 2010 has been added.
• Removed last dependence on the built-in Solver: you can now build a model in the OpenSolver Model window!

Bug reports are very welcome.

OpenSolver 1.2 is now the official stable version of OpenSolver.