So I ended up finding the solution at least for my own problem. You might want to try and see if it works with the reacTIVision too. In network preferences in the advanced settings there is a tab called TCP/IP. Here I pressed Renew DHCP Lease and then connection was back.

Sorry if I am a little off topic.

I'm having a similar experience, but with tuiodroid. Yesterday I downloaded the app and connected to my macbook pro via wifi-net and everything worked perfect. Today I get the INVALID COMMAND LINE warning in Pd and "Client not reachable" on the touch device. I've spent the past hour or two trying out different IPs and computers without luck. If you find/found solution please post. I'll do the same!

I like this patch. I am also working on generative sound patches this is something a bit similar I came up with. Not quite as complex though

Hope you like it!

http://www.pdpatchrepo.info/hurleur/Meditadaze.pd

Gee these helpful PD friends giving out knowledge, still gives me the thrills. Thanks for helping out!!!

Jonastikov