Carla,
Did you read the Word file on how to install it? It only works on an XP computer. Make sure you have the right version of .NET.
I don't have Inventor so can't do a full test.
The free downloads of integrations were developed by our services group, not the development team, so are not fully supported.
Please try the install again following the instructions in the Word file, and if you still have problems, I will report them to the services group.
Mona