I don't know.I tried it with partially transparent selection on hair and it simply doesn't work with them.It is more accurate yes but no where near as good at partial transparent pixel selection as the new foreground tool in RGGJAN's version.
I did install Gimp-2.8RC1 and then re installed Gimp-2.6.
All i had to do to fix Gimp-2.6 after was reinsert the correct gtkrc file for my Aurora theme and i was good to go.That and for some reason i had to re add some 8bf links.
I started Gimp-2.8RC1 and found 7 plug-ins wouldn't fire.(including PSPI)
So i removed them, and replaced them with PC's friendly version plugins (all except PSPI), and that worked.
What was a bit strange was when i placed the PSPI exe back into the plugins folder and fired up GImp-2.8RC-1 it found all my adobe filters.

(i wasn't aware that my pspirc file got copied but it did).
So now i have them both working very nicely.
Oh by the way that libgimp-wire error was from an arrow creator script written in python.
I am still trying to get it to work.