There are newer versions of VTV available.v4.8.7, last changed in April 2010; appears to be mostly bug fixeshttp://code.google.com/p/virtual-treeview/source/browse/branches/4.8/Source/VirtualTrees.pas
v5.0.0, last changed Jan 13, 2011. Looks like the VTV team is putting out an update every month or so, although it is not clear if they are bumping the program version when they do so.I have not been able to determine when the fork occurred and what prompted the version bump.
What should be needed more before installing?
Still has error, please see my screenshots.It is not o.k. because I used 4.8.6 R1. ?
Looking at the screenshot you also need to install the lclextensions package (http://code.google.com/p/luipack/downloads/list).
There was a warning message that it might made the IDE to be very fat.