Library location changed

Hi all
I have a issue, perphaps someone can help
in the webconsole http:\localhost\xibo in the settings part
I changed the location of the Library from d:\Xibo to something else
after that I cannot start the website localhost\Xibo any more
is there a backdoor file where this settings can be changed?

thanks in advance

found that I can change the location in SQL, via phpmyadmin,
there was the location correct.
the fix is that the security rights of the folder where incorrect,
so after adding the correct security rights the website http:\servername\Xibo is accesible again
very strange that those rights are changed …;0