OpenSolver 2.9.4 Beta Release

Hello everyone,

We’ve released OpenSolver 2.9.4 for beta testing! You can download this new version of OpenSolver from: https://sourceforge.net/projects/opensolver/files/.

Below are the release notes that cover the changes made in this new version of OpenSolver:

V2.9.4 – 2021-01-15

  • Extended support for special characters in sheet names
  • Removed support for Satalia Solver Engine since Satalia no longer offers an online service
  • Added fix for NEOS email validation
  • Added support for value-seeking models with no constraints

V2.9.3 – 2020-03-01

  • Added support for using Gurobi 9.0
  • Added a temp fix for running consecutive operations on Excel64bit

As always, we welcome your feedback. Please comment below if it works ok, or if you encounter issues, or if you have any questions regarding the new release. Thanks!

2 thoughts on “OpenSolver 2.9.4 Beta Release”

  1. I am using ExcelSolver for an entropy maximising problem with abour 4000 variables and 150 constraints. It is a simple fraight flow model. My problem is that I do not understand how to get hold of the dual variables. I simply do not see how to get this into the sheet. Can you help me?
    I have asked Elisabeth Wong from Neos Support and she referred me to you.

    1. Sorry, we do not provide access to these Lagrangean duals. But, it would be a good feature to add if anyone is keen. Andrew

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