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Download installer (stable version)

The installers on this page are stable versions, with even numbers after the dot. These versions have been tested thoroughly. The installers are very easy to use with these three steps: (1) close any open Gekko’s, (2) uninstall Gekko, and (3) download and install InstallerForGekko.msi . In step (3), you may have to skip a Windows warning, read more under troubleshooting. Mac/Linux users, see here.

The latest stable version is Gekko 3.0, from 2019. Because of its age, instead of 3.0, it is advised to use the latest 3.1.x version from the development versions page (cf. the Gekko versions overview page). A Gekko 3.2 version will be released in 2024.

  • Stable version 3.0 (patch #9) — 12/12 2019. First release of 3.0 was on 26/4 2019.
  • All the versions in the 3.0 series are considered stable, i.e. the patches do not alter critical code (the full version number is 3.0.9). NOTE: please consider using the latest 3.1.x development version instead, for a better overall experience (cf. the Gekko versions overview page).
  • Installer file (please close Gekko before installation!) [signature]
  • Setup file (only relevant if you have problems with the installer file) [signature]
  • Zip-file (for manual installation — experts only!) [signature]
  • Change-log (detailed list of changes)
  • Stable version, with updated help files. Regarding what is new in Gekko 3.0, please consult the online help file.
  • 3.0.9: (12/12 2019): Patch #9. [install]  [zip]  [signature]. Fix regarding DOWNLOAD connection.
  • 3.0.8: (5/12 2019): Patch #8. [install]  [zip]  [signature]. Small bugfixes, including user manual.
  • 3.0.7: (26/11 2019): Patch #7. [install]  [zip]  [signature]. PLOT labels fix, futureproofing regarding 3.1.x versions. See change-log.
  • 3.0.6: (30/10 2019): Patch #6. [install]  [zip]  [signature]. Procedures and functions with default parameters and prompting. Import cells from Excel into nested list or map. Matrix-like operations on nested lists. OLS dump of FRML equations. Mute option. And more, see change-log.
  • 3.0.5: (16/9 2019): Patch #5. [install]  [zip]  [signature]. Handles Excel-dates, some new functions, bugfixes. See change-log.
  • 3.0.4: (2/9 2019): Patch #4. [install]  [zip]  [signature]. Bugfix version, see change-log.
  • 3.0.3: (27/8 2019): Patch #3. [install]  [zip]  [signature]. See change-log, there are quite a few changes and some bugfixes. Ini-file logic changed, new <l> and <dl> operators,  <missing = ignore> option, x[#i] possible in naked lists, export of matrices to Excel.
  • 3.0.2: (7/6 2019): Patch #2. [install]  [zip]  [signature]. Some minor enhancements (see change-log), and a bugfix regarding the combination of multipliers and the sum() function, for instance PRT <m> sum(#i, x[#k]).
  • 3.0.1 (26/4 2019): First version. [install]  [zip]  [signature]
  • Stable version 2.4 (patch #2) — 12/12 2019. First version released on 26/11 2019.
  • All the versions in the 2.4 series are considered stable, i.e. the patches do not alter critical code (the full version number is 2.4.2). NOTE: New users are advised to use 3.1.x instead of 2.4, cf. the versions overview page. Existing users should consider migrating to 3.1.x as this is where new features are implemented.
  • Installer file (please close Gekko before installation!) [signature]
  • Setup file (only relevant if you have problems with the installer file) [signature]
  • Zip-file (for manual installation — experts only!) [signature]
  • Change-log (detailed list of changes)
  • Stable version, with updated help files.
  • 2.4.2: Fix regarding DOWNLOAD connection. [install]  [zip]  [signature]
  • 2.4.1: Builds upon 2.3.12, can read 3.0 or 3.1.x databanks, see more in the change-log. [install]  [zip]  [signature]
  • Stable version 2.2 (patch #6) — 29/4 2017
  • All the versions in the 2.2 series are considered stable, i.e. the patches do not alter critical code (the full version number is 2.2.6). NOTE: Please consider using Gekko 2.4 instead (has bugfixes etc. and is fully compatible with 2.2). New users are advised to use 3.1.x, cf. the versions overview page.
  • Installer file (please close Gekko before installation!) [signature]
  • Setup file (only relevant if you have problems with the installer file) [signature]
  • Zip-file (for manual installation — experts only!) [signature]
  • Change-log (detailed list of changes)
  • Stable version, with updated help files.
  • 2.2.6: Small J-factor fix. [install]  [zip]  [signature]
  • 2.2.5: Some PLOT improvements.  [signature]
  • 2.2.4: Some PLOT improvements. [signature]
  • 2.2.3: Some minor fixes. [signature]
  • 2.2.2: Some minor fixes. [signature]
  • 2.2.1: First version.

 

  • Stable version 2.0 (patch #3) — 2/3 2016
  • All the versions in the 2.0 series are considered stable, i.e. the patches do not alter critical code (the full version number is 2.0.3).
  • Installer file (please close Gekko before installation!)
  • Setup file (only relevant if you have problems with the installer file)
  • Zip-file (for manual installation — experts only!)
  • Change-log (detailed list of changes)
  • Stable version, with updated help files. Regarding what is new in Gekko 2.0, please consult the online help file (particularly here).
  • 2.0.3: Some smaller bugfixes + update of help-file index/keywords.
  • 2.0.2: Some bugfixes related to PRT/MULPRT.
  • 2.0.1: First version.

 

  • Stable version 1.8 — 22/10 2013
  • All the versions in the 1.8 series are considered stable, i.e. the patches do not alter critical code (the full version number is 1.8.1).
  • Installer file (please close Gekko before installation!)
  • Setup file (only relevant if you have problems with the installer file)
  • Zip-file (for manual installation — experts only!)
  • Change-log (detailed list of changes)
  • Stable version, with updated help files.

 

  • Stable version 1.6 (patch #8) — 2/5 2013
  • All the versions in the 1.6 series are considered stable, i.e. the patches do not alter critical code (the full version number is 1.6.8).
  • Known BUGS in version 1.6.7 (fixed in 1.6.8)
  • Installer file (please close Gekko before installation!)
  • Setup file (only relevant if you have problems with the installer file)
  • Zip-file (for manual installation — experts only!)
  • Change-log (detailed list of changes)
  • Stable version, with updated help files.
  • 1.6.1: First version.
  • 1.6.2: Minor bugfixes.
  • 1.6.3: Minor fixes related to menus.
  • 1.6.4: Minor fixes related to menus.
  • 1.6.5: Minor fixes (table folders).
  • 1.6.6: Minor bugfixes.
  • 1.6.7: Bugfix related to failsafe mode.
  • 1.6.8: Bugfixes, primarily RETURN command.

 

  • Stable version 1.4 (patch #9) — 5/2 2012
  • All the versions in the 1.4 series are considered stable, i.e. the patches do not alter critical code (the full version number is 1.4.9).
  • Installer file (please close Gekko before installation!)
  • Setup file (only relevant if you have problems with the installer file)
  • Zip-file (for manual installation — experts only!)
  • Stable version, with updated help files.
  • Patches:
  • 1.4.1: Fixes an issue when combining Newton and Gauss in fail-safe mode.
  • 1.4.2: Makes PPLOT and UDVALG windows truly independent/floating.
  • 1.4.3: Fixes error message line numbers + some minor problems.
  • 1.4.4: Adds error dialog, and commands PAUSE, STOP and EXIT.
  • 1.4.5: Has “CLEAR *”, CLOSEBANKS, and some minor fixes.
  • 1.4.6: Minor sound option changes.
  • 1.4.7: Gauss convergence, ITERSHOW and CHECKOFF commands.
  • 1.4.8: Added option “reorder” for the Gauss solver.
  • 1.4.9: Checks for problems using ‘()’ together with ‘;’ in same line.

 

  • Stable version 1.2 — 14/6 2011
  • Installer file (please close Gekko before installation!)
  • Setup file (only relevant if you have problems with the installer file)
  • Mostly minor changes on top of version 1.0.53. The help files have been updated. This is a stable version, for use on the ADAM workshop Thursday/Friday 16/6 and 17/6 2011 (the full version number is 1.2.0). In the future, versions with an even digit after the first “.” will indicate stable versions.