Problem:

[PC] My software systematically crashes at startup
[PC] My registered software asks for a serial at each startup
[PC] 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, browse to:

On Windows XP : \Documents and Settings\"YourUserName"\Application Data\GrandVJ2
On Windows Vista, 7, 8 and 10 : \Users\"YourUserName"\AppData\Roaming\GrandVJ2

Then delete the following files:

GrandVJ_preferences.xml
GrandVJ_settings.xml
log.txt

For MediaMaster, browse to:

On Windows XP : \Documents and Settings\"YourUserName"\Application Data\ArKaos MediaMaster5
On Windows Vista, 7, 8 and 10 : \Users\"YourUserName"\AppData\Roaming\ArKaos MediaMaster5

Then delete the following files:

ArKaos MediaMaster_preferences.xml
ArKaos MediaMaster_settings.xml
log.txt

For the Video mapper, browse to the Video Mapper folder in your library and remove the following files:

Mapping.xml
Outputs.xml

Note: Relpace "YourUserName" in the path by Windows account user name.

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.