Unable to install flash player on Mac O/S Mojave

Are you sure that u got the right version? Maybe there are some proplems with your partition.

I have used the installer and the install fails

What does 'install fails' mean?

Th installation continues to fail at around 20% there are no error messages, just the failure statement.

Please provide a screenshot of the failure statement

To troubleshoot further, we'll need to review the installation log files.  Please read through Where do I find the Flash Player installation log on the Macintosh?  and configure your system to obtain the install.log and FlashPlayerInstallManager.log files.  If you're using the online/shim installer also provide the Adobe_ADM.log and Adobe_GDE.log file.  Repeat the installation attempt until it fails/hangs.  Close the installer dialog window and then gather the log files and upload them to cloud.acrobat.com/send using the instructions at How to share a file using Adobe Document Cloud

The install.log file is a catch-all file that records lots of information.  We only need the information pertinent to the Flash Player installation attempt.

Thank you.

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Maria