Application Pack on subdomain

[argonius]

Hi,

i am running plesk 9.5.2 on ubuntu 8.04 with application pack.

If I install any application, like drupal or joomla, on a normal domain (like example.com) and then delete the application, everything works fine. But if I am going to install any application on a subdomain and after that, doing nothing except trying to delete the application again from this subdomain, i am reciveiving the following error:
rmdir("/var/www/vhosts/<domainname_replaced>/subdomains/test2/httpdocs/drupal/sites/default"): Directory not empty
rmdir("/var/www/vhosts/<domainname_replaced>/subdomains/test2/httpdocs/drupal/sites"): Directory not empty
rmdir("/var/www/vhosts/<domainname_replaced>/subdomains/test2/httpdocs/drupal"): Directory not empty
boost::filesystem::basic_directory_iterator constructor
Unexpected error: boost::filesystem::create_directory

Following a lot of xml data containing filenames of the application.

Looks like a Bug, but maybe someone has a fix for this?

Thanks,
Patrick