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Installer stuck on "waiting for other installations to complete"

I'm trying to install KensingtonWorks software for my new trackball. The installer window is stuck on "waiting for other installations to complete...". I force quit installer and tried again, but I get the same message. How can I get out of this loop?

iMac 21.5″, macOS 11.2

Posted on Mar 7, 2021 8:59 AM

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Posted on Mar 7, 2021 10:14 AM

Boot into Safe Mode by booting with the Shift key held down and try running the Kensington installer from there.  Then reboot normally.


NOTE: Safe Mode boot can take up to 10 minutes as it's doing the following; 

• Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

• Deletes font caches, kernel cache, and other system cache files


2 replies
Question marked as Best reply

Mar 7, 2021 10:14 AM in response to roaring branch

Boot into Safe Mode by booting with the Shift key held down and try running the Kensington installer from there.  Then reboot normally.


NOTE: Safe Mode boot can take up to 10 minutes as it's doing the following; 

• Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

• Deletes font caches, kernel cache, and other system cache files


Installer stuck on "waiting for other installations to complete"

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