MultiZilla/QPrefs Crash

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Mozilla 1.7b Build 2004031616
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7b)
Gecko/20040316
MultiZilla/1.6.3.0d

When I go to QPrefs and move the mouse over to the 'Browser Spoofing'
option, Mozilla crashes.
Reproducible on my computer every time. No other options crashes. Only
'Browser Spoofing'.

AppName: mozilla.exe     AppVer: 1.7.20040.31616     ModName: rdf.dll
ModVer: 1.7.20040.31616     Offset: 000057fb

I'm using Windows XP SP1 (with all updates) on an AMD 1700+ with 384MB RAM.

Postino
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