Source of XnView file association manager.

Before you can compile the XnView file association manager (XnVasso.nsi) you have to compile the buildhelpper.exe (build_helpper.nsi) essential when compiling the XnVasso.nsi. Before compiling the XnVasso.nsi, make sure that file tmp-helpper.lst is not in the build directory. tmp-helpper.lst is temporary file created by buildhelpper.exe and normally it should be deleted automatically after it is no longer needed.

you need NSIS v2.16 or newer to compile this.
http://nsis.sourceforge.net/