near 7 months i have this problem in softimage 2012 + now 2013 too for e.g i lost more nod in render tree and ice how i can fix this problem.
sometime i uninstall it then i install it but doesnt good
plz help me
when i open it i saw these things what is this???? like in photo

don't know. try changing your windows locale to us English, especially to get the decimal separator to be a "." instead of a comma ","
that really affects scripting in weird ways.