Thanks for your report. The libcrypto reference will be very useful for other users. And great to know that the problem is fixed in the beta... Now that I look at the sql queries I wonder if you did the update on the visual_phonebook table as it has now some new fields. Regarding the php debug, any output that is outside the xml of the response will break the autocomplete function, so it is not a surprise that it does not work if debug is turned on and you see some xtra line in the output.
Best regards,