Do a simple test to check whether this is related to the python included in ATK:
i) enter the command mode of ATK 10.8: Start--->Run--->type command "cmd" ---> go to the installed path of atk, e.g.: C:\Program Files\QuantumWise\atk-10.8.b1\atkpython\bin---> run "atkpython.exe". In this step, the python included ATK will be launched actually.
ii) type the following two lines
for i in range(5):
print i
", its interface looks like:
In [1]: for i in range(5):
...: print i
...:
If it normally gives the following screen printing,
0
1
2
3
4
this means that your configuration of ATK is OK. Otherwise, if the error message of "<ERROR: 'dict' object has no attribute 'len'>" still appears, it means that the problem is related to the python, as discussed in the the following webpage:
http://groups.google.com/group/pylons-discuss/browse_thread/thread/312e3ead5967468aThe solution for such problem is also given on that webpage.