- export aia
- open it with 7-Zip or winRAR
- go to the affected ScreenX.scm: right mouse click: “Edit” (or: F4)
- remove “Column”:“X” and “Row”:“Y”
- close Editor & 7-Zip / winRAR
No need to copy or rename anything. See the solution from @Svetlana_GREGOIRE : Newbie here...need a little help invoke: no method named `Column' in class edu.mit.appinventor