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Release of GMG OpenColor – Service release

Release date
GMG OpenColor has been released today, Thursday, January 30, 2020.


Online help for GMG OpenColor

License information, system requirements
Click here

Installation instructions
1. Close all GMG applications.
2. Extract the zip archive and run the installation.

The installation instructions are valid for new and update installations. Before updating to a new GMG OpenColor version, you can back up all configuration data: OpenColor > Gear Wheel > Backup > Create


Support for Epson SureColor P75x0 / P95x0

GMG OpenColor now supports the new Epson SureColor P75x0 and P95x0 printers with the newly developed 12-channel print head. The print head's separate Photo Black and Matte Black channels eliminate the need for manually switching the black ink. A significantly higher print speed is achieved by using two print heads. Printer calibration and color control are made easy with the optionally integrated measuring device Epson SpectroProofer.

Supported proofing conditions
GMG OpenColor supports the GMGDriver-11c-PhotoBlack-1200x1200dpi calibration set for Epson SureColor P75x0 / P95x0 on the following media:
  • GMG ProofMedia premium semiMatte 250
  • GMG ProofMedia premium gloss 250
  • GMG ProofMedia premium OBA semiMatte 250
  • GMG ProofMedia studio OBA semiMatte 200
  • GMG ProofPaper semiMatte light

Resolved issues

GMG OpenColor includes improvements that allow you to use your ColorProof even more efficiently. An overview of the improvements and corrections can be found here.

End of life

Please note that we will no longer provide bug fixes, maintenance releases, workarounds, or patches for bugs found in GMG OpenColor or older.


Build number

GMG OpenColor


Tips and Tricks: Missing dotgain curve and edit functionality for DotProof profiles

GMG OpenColor does not include the dotgain curve for DotProof profiles anymore. The functionality to edit the curve is missing as well.
Due to improvements in the DotProof profile calculation technology in the previous GMG OpenColor versions, the ink gradations curve was not displayed correctly anymore. To prevent misapplication, the ‘Dotgain’ tab in the profile edit dialog was removed for DotProof (MXD) profiles calculated in GMG OpenColor 2.2.2 and higher versions.

Versions overview
GMG OpenColor 2.2.3 and 2.2.2: The ink gradation curve and the edit functionality is unavailable for DotProof profiles. Only for DotProof profiles which were created in previous versions, a curve is displayed, which can be edited.
GMG OpenColor 2.2.1: The ink gradation curve is displayed and can be edited. This version does, however, not include the profile calculation improvements.

Workaround: Use Color Corrections to edit the curve
  • Step 1: Adjust the ink gradations in the color correction tool on the project level
  • Step 2: Calculate a contone profile
  • Step 3: Use this contone profile in a proof to validate the ink gradation. Adjust the ink gradations in the color correction tool if necessary.
  • Step 4: Create the DotProof profile as the very last step

This is the generally recommended procedure for creating GMG OpenColor DotProof profiles. The adjustments are performed on the project level. This means that the corrections will be applied to all future profiles in this project.

At a future point in time we will release a GMG OpenColor version which allows to edit the dotgain curve of DotProof profiles.
mit freundlichen Grüßen | with best regards

Jochen Moehrke
Manager Service and Support EMEA

GMG GmbH & Co. KG
Moempelgarder Weg 10
72072 Tuebingen

P: +49 7071 93874-35
M: +49 162 2998335
GMG is a leading developer and supplier of high-end color management software solutions. Our customers span a wide range of industries and application areas including advertising agencies, prepress houses, offset, flexo, packaging, digital, and large-format printers as well as gravure printers. GMG GmbH & Co. KG. Registered Office: Tuebingen. Court of Registration: Stuttgart Local Court, No. HRA 381463. General Partner: GMG Verwaltung GmbH. Registered Office: Tuebingen. Court of Registration: Stuttgart Local Court, No. HRB 382505. Managing Directors: Joerg Weihing, Robert Weihing
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