i have installed 2010 over PT12, in the same folder. did not change anything to the normal instal folder ie \pwtr\
It seems to work well but something is very strange : when i right click on a midi file in XP explorer, then select open with, then browse and select ptw.exe , the file is opened with PT10 !
very strange because , when i double left click on this exe, 2010 is launched.
On my disk I have a previous PT10 version exe, but in another folder.