The Hammer

Error image 7, Invalid message 98 Get_PrecompileMode was fixed by adding a test for the object in TH3BuildToolbar.

If (hoCompiler) Begin
Get piCompilingMode of hoCompiler to bEnabled
End

Error image 5, invalid message msg_show_page_buttons and
Error image 4, invalid message msg_hide_all_buttons have both been fixed by adding condition from
If (iPages<=0) Procedure_Return

Error image 1, info box that tells you that Hammer2 cannot be found and sets windows system32 as a default instead has been changed to set the current folder to psHomePath of the Hammer 3 workspace.
In cEditorProperties, doChangeCurrentFolder

//
Get psHome of (phoWorkspace(ghoApplication)) to sFolder
Move (sMessage+"Changing current directory to '"+sFolder+"' instead.") to sMessage

Error image 2, image 3, image 6, changed logic in cWorkspaceHandlerBase procedure InitWithCurrentWrkSpc added new method "Send CheckSelectedVdfVersionExists" which enumerates all currently installed DataFlex versions on the machine and verifies if the selected DataFlex version is in the list. If it is then fine, do nothing, if it isn't change the selected DataFlex version to the last one in the list.

By doing so and by addressing a DataFlex 19 registry change we now have a Hammer3 that appears to work.