I'm a complete noob in Python, so please forgive this question if it's completely stupid. I had Canopy 1.4.7 installed on my system, working with Python 2.7. I just upgraded to Canopy 2.1.2, with Python 3.5.
I'd been using Rodeo 2.5.2 as my environment. It worked like a charm with 1.4.7, but since the upgrade, I haven't been able to get it to work. All I get is a message saying "Unable to execute." The Rodeo terminal then has to be restarted.
As a matter of fact, any code input doesn't work. I tried to put code into the Rodeo terminal; it doesn't even register the input. I can't press "Enter," nothing happens. I tried to install a package; nothing happened. I've tried reinstalling both Canopy and Rodeo, but to no effect. I've also tried turning it off and on again (thanks, Roy). Mind you, I tried the same codes in the Canopy environment, and they worked fine. So I'm assuming it's an issue in Rodeo.