publisher

i have installed this and all is fine, but if i log in as publisher i have a few bugs:

Warning: fopen(lang/EN.lng) [function.fopen]: failed to open stream: Permission denied in /home/rudenewz/domains/rentagap.com/public_html/revsense/libs/lib.php on line 47

Warning: fputs(): supplied argument is not a valid stream resource in /home/rudenewz/domains/rentagap.com/public_html/revsense/libs/lib.php on line 48

Warning: fclose(): supplied argument is not a valid stream resource in /home/rudenewz/domains/rentagap.com/public_html/revsense/libs/lib.php on line 49