Why should Adobe Reader fail to print because of settings in the Edit/Preferences?

Question

AdobeReaderDocumentCouldNotPrint.txt
Glyn Price Tue 17 March 2015
Why should Adobe Reader fail to print because of settings
in the Edit/Preference?
Adobe Reader XI Version 11.0.10
MS Window 7
File > Print > Print
I got the error message:
The document could not be printed
I googled this error message and used the following
solution that worked i.e. it then printed successfully.
Edit >  Preferences
Category: Security(Enhancement)   'Enable Protected  Mode at Startup'
It was checked, changed it to unchecked.
Category: Documents    'View documents in PDF/Mode'
It was set to 'Only for PDF/A'
Set it to 'Never'
Exited Adobe Reader and restart it. Then it printed.
I had a look on another computer system (Adobe Reader XI Version 11.0.10
and MS Window 7) and on this different computer I could print
without doing the above two changes.
I'm a bit puzzled. Why preferences on one system were not
needed on a different system?

Answer 1

Here is an elaborate method of troubleshooting this problem. There may be a simpler method if anybody wants to suggest one.
There is a general technique that is helpful in this situation. I can't give you complete instructions here, and I haven't tested this with regard to bluetooth devices, but here's the gist of it.
Create a second log-on account for your music projects. Configure it so that when you log in to the new music account, the drivers needed for the Bluetooth devices don't load. You do this in System Preferences: Accounts.
When it's time to do music, log out of your usual account and onto the new one.
When you install drivers for any peripheral, you have the option of installing them "for all users" or only for the user account that is active during the installation.
This governs whether the drivers go in root/library or root/Users/your name/library.
If drivers are in root/library, they will load whenever the Mac is booted up and will run for all users.
But if drivers are loaded in root/Users/your name/library, they will only load if you log in as "your name". If you have a second account called root/Users/music account/, and you log in under that, the drivers in "your name" will not load. Get it?
To get this working right you need to be knowledgeable about moving or deleting files in the /library/ directory and subdirectories, and you need to be careful because you can unwittingly cause some damage if you are not careful.
There is also the root/System/library directory, and in general you should never mess around with anything in there or you might hose your system.
In summary, I would start by using the installer programs for your BlueTooth devices and DE-installing all drivers. Reboot. Log back in as your usual user account. Then RE-install each driver and see if the installer program gives you the OPTION to installl for all users or just for this user. Choose the latter. Then log on to your new Music account and see if the problems go away.