Critical Error: Stuck on not fully developped template

[mateen2]

While making a new template I changed it for the user: administrator.
Since the mod is not correctly configured I get an error when going back to the administrators desk:

phpBB : Critical Error

Could not open fastControl template config file

DEBUG MODE

Line : 335
File : /home/virtual/site134/fst/var/www/html/sitesbb/includes/functions.php

How can I change back the mod from the current (not correctly configured mod) to subSilver when getting no acces to the administrators desk??

I am looking to a solutions through ftp, mySQL to change a PHP file or database record to have the possibility to return to the administrators desk with subSilver.

The template itself can be repaired later.

Who can help me out?

Greetings Mateen Siddiqui

Template(s) used: fastControl (not working) used to be subSilver
Any and all MODs: MOD_ATTACHMENT
Do you use a port of phpBB: no
Version of phpBB: 2.0.11
Version of PHP: 4
Which database server and version: mySQL version unknown but working correctly
Host: flexwebhosting.nl
Did someone install this for you/who: no
Is this an upgrade/from what to what: no
Is this a conversion/from what to what: no
Have you searched for your problem: yes
If so, what terms did you try: support+templates
State the nature of your problem: changing templates, not from the administrators desk
Do you have a test account for us: adviesdrogist.systemsite.nl
login: harry, password: harryP

[Anon]

tried this?