Assuming you have an older version of the “WD Drive Utilities” application installed, here is how I installed the newer WD Drive Utilities (v2.1.1.100) application:1. Download WD_Utilities_Standalone_Installer_Mac_2_1_1_100.zip file from MacUpdate.2. Double-click the downloaded zip file to create the “WD_Utilities_Installer_for_Mac_2_1_1_100.dmg” on your desktop. 3. Double-click the “WD_Utilities_Installer_for_Mac_2_1_1_100.dmg” to create the “WD Drive Utilities” disk image on your desktop.3. Open the “WD Drive Utilities” disk image. Do NOT start the installer application. Instead, right-click the file “WD Drive Utilities Installer” application and select the “Show Package Contents” option.4. Open the “Contents” folder.5. Open the “Resources” folder. 6. Scroll down in the “Resources” folder and double-click the “WD Drive Utilities.zip” file.7. Open the “WD Drive Utilities” folder and copy the “WD Drive Utilities” application.8. Paste the “WD Drive Utilities” application on your desktop and rename it “WD Drive Utilities v2.1.1.100”9. Move the “WD Drive Utilities v2.1.1.100” application to wherever your previous “WD Drive Utilities” application was located.10. Test the new “WD Drive Utilities v2.1.1.100” application. If it works correctly, discard the old version of “WD Drive Utilities.” This worked for me and I hope it solves the installation problem for you.ATTENTION Western Digital! The last couple of versions of your WD Utilities installer have had the same problem. PLEASE fix the installer for all of your loyal Mac customers or, at the very least, post an official workaround for your customers. Thanks!