I drew an allene substructure in the substructure search window, hit search and got the error message "The molecule you pasted is not in a recognized structure format!". A following search for cyclohexane worked, so not a general problem with this search pane.
I drew an allene substructure in the substructure search window, hit search and got the error message "The molecule you pasted is not in a recognized structure format!". A following search for cyclohexane worked, so not a general problem with this search pane.