The Molecular Graphics Laboratory Forum

I am running MGLTools v-1.5.7rc1 in 64 bit MS Windows 7. In working through the Tutorial I have encountered the following in AD4 Exercise Five step 1:

Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Program Files (x86)\MGLTools-1.5.7rc1\lib\lib-tk\Tkinter.py", line 1410, in __call__
return self.func(*args)
File "C:\Program Files (x86)\MGLTools-1.5.7rc1\lib\site-packages\AutoDockTools\autogpfCommands.py", line 4618, in chooseLigand_cb
mol = self.chooser.getMolSet()
File "C:\Program Files (x86)\MGLTools-1.5.7rc1\lib\site-packages\Pmv\guiTools.py", line 178, in getMolSet
if self.mode=='single': return mols[0]
File "C:\Program Files (x86)\MGLTools-1.5.7rc1\lib\UserList.py", line 31, in __getitem__
def __getitem__(self, i): return self.data[i]
IndexError: list index out of range

Unfortunately, I am not a Python programmer and would appreciate assistance in finding a solution to the problem.

Thanks in advance.