Hello, I have a same problem as you discussed here...
File: /www/doc/www.vlci.org/www/install_mod.php
Line: 117
PunBB reported: Unable to copy .htaccess file to new subfolder with name '/www/doc/www.vlci.org/home/attachments/d9811d52c73e11f35e2f1e8659bc472a'
attach_func if(!mkdir($pun_config['attach_basefolder'].$newfolder,0777))
install_mod if(!mkdir($basepath.$newfolder,0777))
created folder chmod 0750 (still)
Can you help me?