Yes, I tried. The hub on 7.1 didn't crash at least when trying simple programs. But it seems like my probe created with Perl API isn't working anymore with 7.1. Didn't investigate it any further than that yet, as I noticed it late friday evening. Seems like it fails to register, though.
Not 100% if old .net api probes work properly on 7.1, I'll have to test that too now. I tried some basic login methods which now worked & didn't crash anything. I'm now developing on newer version of .net api that I got from support, and it works fine. Also some of the bugs from previous versions have been fixed, so I'm liking it pretty much.
I think new Perl and .net api versions were in the roadmap from early 2014, so I'm hoping there will be official releases & fixes for the perl api soon.
-jon