–>Point (1) was right. I did exactly the same thing.
–>Full control was set to the drive in which installed glade and ui.py is present in this directory which is in readable format.
–>Deleted all other versions of glade present.
Still the error is coming in windows.
By the way i switched to glade 4.3.1 as suggested. The same problem is present in this version also.
Am i doing something wrong in setting the environment variables??