OS X/macOS installation instructions for Maud 2.63 and higher

After downloading the archive, uncompress it if needed (in case you have a Maud.dmg.gz, just double click on it), mount the Maud.dmg by double clicking it and put the Maud.app application where you want to install it.

Start Maud by double clicking the Maud.app.

You will get a window asking for the permission to run the program first.

The following problem should not appears with version 2.84. Maud is an application signed as official developer and in case you just get a notice it is from Luca Lutterotti as developer and asking if you want to run it. Let me know in the comments if this is not the case.
For version < 2.84 (or if you encounter some troubles): If the application does not start, check in your System Preferences, under the Security & Privacy settings. The Allow apps downloaded from: setting should be: Anywhere or Mac App Sore and identified developers. Use the former if the second option still don’t work.


  • Where is the structure.mdb database? In the new version all these accessory files are located in your Home directory under the Documents/maud folder. Also the examples can be found there in a specific subfolder.

7 Comments on “OS X/macOS installation instructions for Maud 2.63 and higher

  1. When I try to download and use Maud, I keep getting an error message popup that says:
    “Maud” can’t be opened because Apple cannot check it for malicious software.
    This software needs to be updated. Contact the developer for more information.

    Also, I’m not sure if this is just something weird in my settings, but the comment box and other fill ins to leave a reply are all white boxes with white font, which is rather difficult – I had to type everything out in a separate document before copy and pasting it here.

    • What you get is a newer version of Mac OS asking for the permit to run the program. It is confusing a bit, but what you have to do is open your System Preferences and in Security & Privacy, under the General tab give Maud the permission to run. This is common for every program that it is not downloaded from the App Store.

  2. Input box for comments fixed.

    Regarding Maud, there is a new directive, that probably is already enforced, for which I have to send the software to Apple to get it approved. Have not had the time to do it. So you have to open the Preference panel, security & settings and manually specify you want to open it anyway. I’ll do it for the future versions.

  3. Why do I get x-axis in units of eV when I drag XRD data file with XY format? How do I change that to 2theta?

  4. I have installed maud 2.99 version in Windows 10 pro and upgrade the Maud 2.94 versioin to 2.99 in MacOS, In both OS, when i open 2.94 version par files and compute the datafiles i am receiving the following errors
    in Windows 10 Pro and MacOS
    Error in computation, check the java console window for more details
    Java Version 16.0.1
    Encoding UTF-8
    Maud version 2.99, cvs update on date 2021/05/6 .., Revision 2.99 build 10956. date tue jul 06…..
    how to reslove this issue, in windows it is fresh install and in macos it is basically upgrade
    Checked the folders and file, i have all the folder as specified in instruction. have JDK folder but no JRE folder
    please guide me how to correct this problem

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