TreePanel and TreeStore problems when opening 1.1.2 project with 1.2.2 Build 48

Trying to open one of our 1.1.2 projects in Designer 1.2.2 Build 48 and encountering the following error:

An unexpected error occurred
Please help us make Designer better by reporting this error to the Designer forums
TypeError: 'undefined' is not an object

Restart Exit Designer

Based on other posts I've found in the forums, I'm guessing the problem lies in one of our class definitions, but I have no indication of where the problem lies. Is there any way to run Designer in a debug or enhanced logging mode so that I can actually see where the error is occuring?

Thanks

I like that idea! Perhaps we should request a feature in Designer where we can see a debug console!?

I too would like to put in a strong request for debugging, or just some logging.

I am getting the exact same error, the only options are to restart or exit designer.

This is happening when I load data into my harness tree store.

I'm on designer on 1.2.2 build 48 on CentOS linux (32 bit) version 5.5. I'm trying to build an ExtJS 4.0 project, but not getting very far.

I have no idea where to begin troubleshooting. When I make the exact same request into a browser, I get well defined JSON output. Help!

Here's exactly what I did to cause this to occur:

1) Start a new project in the designer.
2) Add a tree panel
3) Create a new JSON Tree Store, add URL, fields etc.
5) associate the tree panel with the new tree store. Click "Load Data"

The project up to now behaves as expected. It works. I am seeing my data in the tree view.

Now, go File | Save project as...
Exit designer.
RE-start designer and open recent project.

Now, when I click "load data" in the Tree store, I get the said error.

"TypeError: 'undefined' is not an object" opening 1.1.2 project with 1.2.2 Build 48:

it should be added that I see the data get loaded -- the tree populates, but instantly after that, the modal dialog box opens, and my only choices are to exit or restart.

We are working on ways to improve the bug reporting. We are aware that right now the information that you get back is not very useful.

Thanks for the above test case. We will try to reproduce it. It may also be helpful if you were to send your own project file which you are encountering the problem with.

Aaron, I'd be happy to send in my project file. What is the best method to get it to you?

Ive attached the simpliest project file I could create that reproduces the problem.
To reproduce the problem, just load the project and go to the store tab and right-click and select "Load Data".

It reproduces on CentOS 5.5 and on my mac running Lion.

Of course you will need the server for the JSON. I also attached the output of the JSON my server produces.

Thanks for taking a look!

Problem project file attached. The error occurs immediately upon opening the file.

For fun I loaded deaconb's project file and the problem reproduces on both my environments.

I wonder if we are experiencing the same problem. The error message is the same.