I have come back to test Tiggzi again having had a good try with ApplicationCraft. I tried before when it was GoTiggr and had exactly this same problem: - I cannot edit an existing app. I select the project, click on edit and I get the progress bars loading the Tiggzi stuff and the app stuff then I get returned to the start page for create/open existing app.
So you know how I got to this point (possibly another bug?) I was testing out the Lifehacker RSS project build. I got as far as the binding UI output params but all I got on my screen was the name column and no component/attribute/Javascript columns. So I thought I would save and reload but now cant get back into the project.