[web2py] Error in db.py

[Deepan]

Hi,

I am having an error in web2py app. I am not able to figure out what
is causing the error. It would be of great help if any can figure out
the error and let me know.

Error is as follows:


Traceback (most recent call last):
  File "/cube/apps/web2py/gluon/restricted.py", line 178, in
restricted
    exec ccode in environment
  File "/cube/apps/web2py/applications/rnai/models/db.py", line 34, in
<module>
    auth_table = db.define_table(Field('university', length=128,
default=''),)
  File "/cube/apps/web2py/gluon/sql.py", line 1262, in define_table
    tablename = cleanup(tablename)
  File "/cube/apps/web2py/gluon/sql.py", line 571, in cleanup
    if re.compile('[^0-9a-zA-Z_]').findall(text):
TypeError: expected string or buffer

Thanks