Mac App Store issue: “App” is damaged and can’t be opened

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Rarely, you may an encounter a problem with MetaDoctor, MetaDoctor Pro, GraphCalcPro, or Oilmanac downloaded from the Mac App Store, where you get the following error message when you try to launch the app:

Error dialog

This is not an issue with the app itself, it is a problem with the downloaded app package. The contents of the downloaded package are controlled by the Mac App Store, and we cannot directly repair the damaged package.

Here are some steps to take to try to resolve the problem:

  1. Delete the damaged app from your Mac.
  2. Log out of the Mac App Store.
  3. Restart your Mac.
  4. Log back into the Mac App Store.
  5. Reinstall the app from the Mac App Store (detailed instructions from Apple).

Occasionally waiting 24 hours and reinstalling the app from the App Store can correct the issue.

If this does not resolve the issue, we recommend you contact Apple support for further assistance.

MetaDoctor / MetaDoctor Pro Version 2.0.5 Now Available on the Mac App Store

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MetaDoctor / MetaDoctor Pro version 2.0.5 update includes significant performance improvements and bug fixes.

  • New settings available in Preferences to enable/disable reading of definition and release date from the video track metadata when not available in iTunes tags (enabled by default).
  • “Album” tag added in the Advanced Tags window.  Requested by Plex users, this tag maps to “Category” in Plex.
  • Advanced Tags window location and size now saved, per user request.
  • Fixed issue where chapters were incorrectly written in some cases with “Save to New File” option.
  • Substantial increase in performance and decrease in memory usage with “Save to New File” option.

MetaDoctor / MetaDoctor Pro Version 2.0.4 Now Available on the Mac App Store

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MetaDoctor / MetaDoctor Pro version 2.0.4 update includes minor performance enhancements, code improvements, and bug fixes.

  • For TV shows, episode description from TMDb is now mapped to Short Description and Full Description, for proper display in iTunes.
  • Batch mode window now closes when all files have been saved/closed.
  • Batch mode now functions properly after another window has been opened.
  • TMDb search improved, exact title match now selected automatically.

MetaDoctor / MetaDoctor Pro Version 2.0.3 Now Available on the Mac App Store

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MetaDoctor / MetaDoctor Pro version 2.0.3 is updated for macOS 10.13 High Sierra. It includes a critical fix for the error in saving metadata to files with version 2.0.2 introduced with High Sierra.

In addition, version 2.0.3 includes a new advanced tag editing feature, available in the Tags menu. This feature allows access to additional tags, some of which are not read by iTunes by may be read/used with other media player/manager software, such as keywords.

Version 2.0.3 utilizes the latest Apple SDK, for maximum performance and compatibility.

GraphCalcPro 3.0 Now Available on the Mac App Store

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GraphCalcPro version 3.0 for macOS is now available on the Mac App Store.  This major update includes:

  • New history menu options, including the ability to edit your calculation history.
  • New Constants menu.  Any constant can be entered directly from the menu.  Most frequently used constants can still be selected from the constants button.
  • New ability to import and export calculation history and constants.
  • New sharing feature.  Now share your calculation history or constants with other users of GraphCalcPro on macOS and GraphCalcPro2Go on iOS.
  • New options to merge, replace, or keep your current history when activating iCloud history sync on a new device.
  • History is preserved when switching between in-fix and RPN modes. Calculation history is automatically converted between the modes. iCloud history sync is now independent of mode.

GraphCalcPro2Go 3.0 Now Available on the App Store

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GraphCalcPro2Go version 3.0 for iOS and watchOS is now available on the App Store.  This major update includes:

  • New ability to edit calculation history.
  • New sharing feature.  Now share your calculation history or constants with other users of GraphCalcPro2Go on iOS and GraphCalcPro on macOS.
  • New options to merge, replace, or keep your current history when activating iCloud history sync on a new device.
  • History is preserved when switching between in-fix and RPN modes. Calculation history is automatically converted between the modes.
  • UI improvements.
  • Fix for v. 2.3 bug where crash would occur when tapping the Deg/Rad button.
  • Stability improvement for GCP2Go on Apple Watch.