All, I have a problem in starting my Python(Django) App using Apache and Mod_Wsgi I am using Django 1.2.3 and Python 2.6.6 running on Apache 2.2.17 with Mod_Wsgi 3.3 When I try to access the app from Web Browser, I am getting these errors. [Mon Nov 22 09:45:25 2010] [notice] Apache/2.2.17 (Unix) mod_wsgi/3.3 Python/2.6.6 configured -- resuming normal operations [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] mod_wsgi (pid=1273874): Target WSGI script '/u01/home/apli/wm/app/gdd/pyserver/ apache/django.wsgi' cannot be loaded as Python module. [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] mod_wsgi (pid=1273874): Exception occurred processing WSGI script '/u01/home/ apli/wm/app/gdd/pyserver/apache/django.wsgi'. [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] Traceback (most recent call last): [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] File "/u01/ home/apli/wm/app/gdd/pyserver/apache/django.wsgi", line 19, in <module> [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] import django.core.handlers.wsgi [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] File "/usr/ local/lib/python2.6/site-packages/django/core/handlers/wsgi.py", line 1, in <module> [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] from threading import Lock [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] File "/usr/ local/lib/python2.6/threading.py", line 13, in <module> [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] from functools import wraps [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] File "/usr/ local/lib/python2.6/functools.py", line 10, in <module> [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] from _functools import partial, reduce [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] ImportError: rtld: 0712-001 Symbol PyArg_UnpackTuple was referenced [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] from module /usr/local/lib/python2.6/lib-dynload/_functools.so(), but a runtime definition [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] of the symbol was not found. [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] rtld: 0712-001 Symbol PyCallable_Check was referenced [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] from module /usr/local/lib/python2.6/lib-dynload/_functools.so(), but a runtime definition [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] of the symbol was not found. [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] rtld: 0712-001 Symbol PyDict_Copy was referenced [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] from module /usr/local/lib/python2.6/lib-dynload/_functools.so(), but a runtime definition [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] of the symbol was not found. [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] rtld: 0712-001 Symbol PyDict_Merge was referenced [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] from module /usr/local/lib/python2.6/lib-dynload/_functools.so(), but a runtime definition [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] of the symbol was not found. [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] rtld: 0712-001 Symbol PyDict_New was referenced [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] from module /usr/local/lib/python2.6/lib-dynload/_functools.so(), but a runtime definition [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] of the symbol was not found. [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] rtld: 0712-001 Symbol PyErr_Occurred was referenced [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] from module /usr/local/lib/python2.6/lib-dynload/_functools.so(), but a runtime definition [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] of the symbol was not found. [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] rtld: 0712-001 Symbol PyErr_SetString was referenced [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] from module /usr/local/lib/python2.6/lib-dynload/_functools.so(), but a runtime definition [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] of the symbol was not found. [Mon Nov 22 09:45:43 2010] [error] [client 108.10.0.191] \t0509-021 Additional errors occurred but are not reported. I assume that those missing runtime definitions are supposed to be in the Python executable. Doing an nm on the first missing symbol reveals that it does exist. root [zibal]% nm /usr/local/bin/python | grep -i PyArg_UnpackTuple .PyArg_UnpackTuple T 268683204 524 PyArg_UnpackTuple D 537073500 PyArg_UnpackTuple d 537073500 12 PyArg_UnpackTuple:F-1 - 224 Please guide. Regards, Guddu