You probably hit a bug in the Table Arrangements component.
To minimize loss, I went in with 7zip and changed all occurrences of "TableArrangement" to "VerticalArrangement" in Screen1.scm
This way you keep all subcomponents, but you should just nest horizontal and vertical arrangements to avoid TableArrangement bugs.
The project loads without error, and you should be able to rearrange things in the Designer.
APP_03.aia (993.0 KB)