WordBB - WordPress / MyBB integration

[Elderyn]

hi all

I have a problem

When i have install a wordpress, lastest version, and wordbb lastest version

I have activated a plugin, in panel manager, config this, and can't save.

Error is :

PHP Code:

Warning: file_exists() [function.file-exists]: open_basedir restriction in effect. File(/subdomains/forum/httpdocs) is not within the allowed path(s): (/xxx/xxx/xxx/xxx/xxx/portail/httpdocs:/tmp) in /xxx/xxx/xxx/xxx/xxx/portail/httpdocs/wp-content/plugins/wordbb/wordbb.php  on line 96 


Who have a solution plz

Thank by advance