Bug Deinstall

[DetlefZ]

I have mantis-1.1.1-9 installed from the application directory and now try to deinstall the package. This results in a long, long message that starts with:

ERROR: PleskUtilException

Unexpected error: boost::filesystem::create_directory

0: class.cSiteAppManager.php:220
cSiteAppManager->_callSAppMng(string 'delete-application', array, string '<?xml version="1.0"?> <INSTANCE-DATA><SECTION PREFIX="htdocs"><FILE>account_delete.php</FILE><FILE>account_page.php</FILE><FILE>account_prefs_inc.php</FILE><FILE>account_prefs_page.php</FILE><FILE>account_prefs_reset.php</FILE><FILE>account_prefs_update.php</FILE><FILE>account_prof_add.php</FILE><FILE>account_prof_delete.php</FILE>

How can I perform the deinstall?