I've recently updated the SET toolkit in Backtrack 4 R2 using the "svn update" command from the SET directory. It is currently at revision 431. I get the following error when trying to run it from the command line:

Traceback (most recent call last):
File "./set", line 18, in <module>
import set
File "src/main/set.py", line 17, in <module>
except: reload(core)
NameError: name 'core' is not defined

Before I did the update, SET worked just fine. So not sure if it has to do with this new core module that SET added for 3rd party developers. Thanks if anyone knows how to answer this.