Sorry - but you made an really arrogant mistake!
You didnt take care about the standards!
How the [moronic expletive] can you tell people that they have an "unusual" installation?
Its YOUR FAULT.
Warning: file_exists() [function.file-exists]: open_basedir restriction in effect. File(/var/www/web2/bb-attachments/) is not within the allowed path(s): (/var/www/web2/html/:/var/www/web2/phptmp/:/var/www/web2/files/:/var/www/web2/atd/) i
That Plugin has NOTHING to search and do in /var/www/web2 !!!
Thats a place where i.e. .htpasswd has to be.
Why bb-attachments doesnt uses - like every other "nice" plugin - the standard and has its dir at
/var/www/web2/html/wp-content/uploads/bb-attachments ???
Why do you tell people that have a well working and secured server that they have a "unusual" installation???