Why is your experiment looking for an image called 323
Is you experiment psyexp file in your Downloads folder? Please move it (and subfolders) to a dedicated folder, preferably in your documents area.
Do you really need so many text boxes? I’m just wondering whether you have text boxes with fixed text of which you are trying to show one, rather than having a single stimulus textbox set to update each repeat using the name of a column in your spreadsheet.
This thread might help with one of your questions about groups.