Quick View Plus users who experience trouble with the display of certain file extensions can updatecould test the corresponding viewer *.DLL with the most current version taken from the Oracle original redistributable package. QVP11.0.0 is based on the Oracle Outside In Technology Downloads : Viewer Technology 8.3.2 (vw-8-3-2-win-x86-32.zip, vw-8-3-2-win-x86-64.zip) which was released in September 2009.
The current version at the time of writing available thru the Oracle website is v8.3.7, released in July 2011. Before you can download from Oracle, you must register (it's FREE) and then click on accept the "Accept License Agreement". Since the screenshot demonstrates that all vs*.DLL files of the original Oracle package are unchanged in the QVP installation (and please feel free to do your own synchronization with Dopus, or use Beyond Compare (BC3) for a folder comparison, you can safelycould overwrite the older vs*.dll files (v8.3.2) with the newer vs*.dll files (v8.3.7) for testing purposes. Safe or not, I've tested it and it works great!
In fact, to save time, you cancould even take the entire set of files \redist\*.* (from the download *.zip, 32-bit vs. 64-bit package) and copy it to the QVP program folder, i.e. C:\Program Files\Quick View Plus\Program\., thus overwriting and updating all same-named files. Doing so, newly supported file formats (such as AutoCAD 2010, in v8.3.7) probably wont preview in the Dopus viewer pane ... I couldnt test this because i dont own any AutoCAD 2010 files 
As an old TotalCommander user I noticed the resemblance between its uLister freeware plugin supporting 500+ file formats and Quick View Plus 11 supporting 300+ file formats, that's how i found out about all this 
(There too, TC users can keep their viewer *.DLL's current by overwriting them with the latest Oracle files.)
The merit of the Avantstar development team is to provide a standalone GUI (qvp32.exe, qvp64.exe) and to guarantee that the "Oracle-published DLL's" interact flawlessly with the application *.exe. In QVP version 11.0 Avantstar guarantees that 300+ (of the 500+) file formats supported by the "Oracle-published DLL's" are viewed fine in the Quick View Plus GUI, and it is safe to assume that in far future some more of the remaining ~200 file formats are viewable/previewable in the Quick View Plus GUI.
Thanks to Avantstar for writing the *.exe but above all thanks a million to Oracle for publishing the sv*.dll files!!!
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