Problem mit reduce_admin_navigation

[Nachtfalke-01]

Hallo......

Ich habe gerade den reduce_admin_navigation_2_2_0 mod installiert.
Jetz wird mir beim Betreten den Adminbereich folgender Fehler angezeigt:

Code: Alles auswählen

Warning: fopen("./../cache/jr_admin.dat", "w") - Permission denied in /var/www/phpBB2/includes/functions_jr_admin.php on line 241

Warning: Supplied argument is not a valid File-Handle resource in /var/www/phpBB2/includes/functions_jr_admin.php on line 242

Warning: Supplied argument is not a valid File-Handle resource in /var/www/phpBB2/includes/functions_jr_admin.php on line 243

Warning: Cannot add header information - headers already sent by (output started at /var/www/phpBB2/includes/functions_jr_admin.php:241) in /var/www/phpBB2/admin/index.php on line 714

Warning: Cannot add header information - headers already sent by (output started at /var/www/phpBB2/includes/functions_jr_admin.php:241) in /var/www/phpBB2/admin/index.php on line 715

Kann mir jemand weiterhelfen?

Ich habe die Dateien als "txt" angeh?ngt:

admin/index.php
includes/functions_jr_admin.php

MfG Nachtfalke