This code
js_obj := oAcroPDDoc.GetJSObject;
js_obj.Collab.showAnnotToolsWhenNoCollab := true;
which used to work in Acrobat 7 and 8 (and was infact required to enabled editing of note/annotations/comments) appears to crash Acrobat 9.
Does anyone know if there is a work around (the one listed here does not work for me). Anyone from Adobe use SO and care to answer?