Systemversion.plist - disabled many programs

Hello friends,

My situation:

I edited the systemversion.plist file in core services on MAC in order to run an update for pro tools software, now many of my programs are not recognized. I edited the plist back to original OS version I am running, but still programs Are not recognized. Including time machine.

Cannot backup as result, do not have original install disk

Running os x Sierra 10 13 2

Included text shows current status of systemversion.plist file, which I edited back to reflect my current OS high Sierra

Previously changed system version to 10.9 so Protools update could run

Anyone know wth is going on? Lol

I would definitely Appreciate your help
Tim LittleHawk Blanchette

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "">

<plist version="1.0">
<string>1983-2017 Apple Inc.</string>
<string>Mac OS X</string>

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Clarification Request
Also enabled/disabled ...

Upon startup, entered recovery mode, and changed from default setting I forget whether I enabled or disabled this function...

Utilities - terminal
Sync; reboot

Then I edited the systemversion.plist
Then I attempted to install the pro tools

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Just an idea.

Never do that. And try another user account. I've seen stuff like this royally mess up the OS.

My only idea is another user account.

Protools looked to have a version for Sierra but I did find discussions about this edit. Sounds like a mess.

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User account

Does that mean I would lose everything?

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Not yet.

Another user account is simply to see if there is hope in gleaning a working file for you to use in the account you broke. That is, if the damage is limited to the account.

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