SymptomsWorking with web browser Mozilla Firefox 3.6.9 or above.
Open a site in Sitebuilder Wizard on page Edit (Parallels Plesk Sitebuilder -> Sites -> <Site Name> -> Edit Site In Wizard -> Edit).
Try to drag and drop any block module on the site from the right menu (Voting, SitePal, Site Map, Script, RSS Reader, Online Status Indicator, Feedback, Area Map).
The module does not appear on the site.
CauseAccording to Release Notes of Parallels Plesk Sitebuilder 4.5 supported browsers are Internet Explorer 6.0/7.0 and Firefox 1.5/2.0:
Known Problems and Limitations
2. Supported browsers are: Internet Explorer 6.0/7.0, Firefox 1.5/2.0.
Several major functions used by drag and drop feature have been disabled in Mozilla Firefox since version 3.6.9.
ResolutionThe problem will be fixed in future update of Parallels Plesk Sitebuilder.
Hotfix for Parallels Plesk Sitebuilder 4.5.x is in the attachment. To installing the hotfix download file sitebuilder45_modules_drag_and_drop_patch.tgz and extract the archive with "tar -zxf" into root directory of Parallels Plesk Sitebuilder 4.5 (/usr/local/sitebuilder for RedHat-like OS, /opt/sitebuilder for Debian-like OS).
~# wget http://kb.sp.parallels.com/Attachments/14040/Attachments/sitebuilder45_modules_drag_and_drop_patch.tgz
~# tar -zxf sitebuilder45_modules_drag_and_drop_patch.tgz -C /usr/local/sitebuilder/