Your freezing issue is unresolved, but it is not sure if it is related to the new API beta at all, as you also had problems with the old version. We had experienced no problems with the new beta so far, so I'd use it, but for being on the safe side better use it on a demo account only for the next couple of weeks.
Thanks jcl. I upgraded to 1.32.3 for Production Real Trading over the weekend. I did not install the new API beta - it is only in use for Demo trading at this time. I'll await your word before putting it into Production Real Trading.