The installer wants an open internet connection, without that it will crash. Same applies to RealPlayer itself, the app will crash on it's user interface if it hasn't got an open internet connection. We stopped distribution.
An alternative to running the realplayer installer and grabbing the install file from the temp directory is to get it from a non realplayer download site. I use filehippo.com (http://www.filehippo.com/download_realplayer/).
rename %PROGRAMFILES%\Real\RealPlayer\DataCache\Update\update.vs to disable "Check for Updates" in Help/Info... dialogue
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