[Mac] How can I reset the software to default preferences?

Problem:

[Mac] My software systematically crashes at startup
[Mac] My registered software asks for a serial at each startup
[Mac] How can I reset the software to default preferences?


Solution:

Startup problems can be caused by corrupted Preferences files. Sometimes you may also have configured the software in a way that you cannot modify anymore (i.e. starting full screen automatically on a display which is no more connected to the computer). Most of the time, deleting the software Preferences files is enough to fix the issue, the software will create new, clean Preferences files at the next start.

To find and delete your ArKaos software Preferences files, first quit the software, then

For GrandVJ, find these files and move them to the trash:
MacintoshHD/Users/"YourUserName"/Library/Preferences/GrandVJ2/GrandVJ_settings.xml
and
MacintoshHD/Users/"YourUserName"/Library/Preferences/GrandVJ2/GrandVJ_preferences.xml

For MediaMaster, find these files and move them to the trash:
MacintoshHD/Users/"YourUserName"/Library/Preferences/MediaMaster5/ArKaos MediaMaster_preferences.xml
and
MacintoshHD/Users/"YourUserName"/Library/Preferences/MediaMaster5/ArKaos MediaMaster_settings.xml
and
MacintoshHD/Users/"YourUserName"/Library/Preferences/com.ArKaos.MediaMaster5.plist

For the LED Mapper, find these files and move them to the trash:
MacintoshHD/Users/"YourUserName"/Library/Preferences/LEDMapper_preferences.xml
and
MacintoshHD/Users/"YourUserName"/Library/Preferences/LEDMapper_settings.xml

For the Video Mapper, find these files in the Video Mapper folder within your library and move them to the trash:
Mapping.xml
and
Outputs.xml
The default location of the Video Mapper folder is:
MacintoshHD/Users/"YourUserName"/Library/Application Support/ArKaos/MediaMaster/Library/VideoMapper

Note: Relpace "YourUserName" in the path by your Mac OS X account user name. To browse to your "Library" folder you can switch to the Finder then click "Go" in the top menu bar and select "Library". In Mac OS X Lion and above, the "Library" folder is hidden, to make it appear you can proceed the same way but you have to press the "Alt" key on your keyboard at the same time you click the menu "Go"

Then launch the software again.

Now all your setting should be in default status. You will need to enter your serial number again to unlock the software. You can retrieve your serial number in your customer account, once logged in to the ArKaos web site, on the "My orders" page.

If that doesn't work:

This means that the permissions problem may not be limited to the ArKaos software Preferences files, your computer probably needs a system-wide Preferences verification with Apple's Disk Utility application.

Please refer to the related Apple Support Article for instructions on how to verify / repair disk permissions with Apple's Disk Utility application.

After you've done that and restarted the computer, launch your ArKaos software. You may have to enter your serial number again to unlock the software. You can retrieve your serial number in your customer account, once logged in to the ArKaos web site, on the "My orders" page.