Mixed version may lead to confusion.

The version shown on the installer UI is 2.46, however the installed product is 1.7.710. This may lead to user confusion over what they are installing.
Yes, I know the 2.46 refers to the Nullsoft installer version but this can (should) be removed/replaced...
http://nsis.sourceforge.net/Removing_'Nullsoft_Install_System_vX.XX'_String_from_installer