We have made a number of corrections to the files contained in Tutorial_update.zip (attached). The corrections to these files should alleviate some of the problems you have had with Tutorials 2 and 3. To use the updated files, you must replace the correct existing file with the correct updated file.
Additionally, there are some corrections I will make to the instructions which I will post an update for shortly. Planned changes include the following:
1. In Before You Begin the tutorials
2. In Tutorial 2
3. In Tutorial 3