I had an issue with the installation of Fences Pro. During the initial download/install it asked me if I wanted to keep my snapshots and settings, and that Fences Free had to be uninstalled. I clicked yes to all and everything went ok until the reboot.
It appeared Fences downloaded/installed correctly, but when I tried to run it via Impulse I got a "missing context/data" error and that Fences still needed to download.
I clicked yes to that but it hung for quite a while, so I stopped the download, cleared out all Fences folders and data from their respective places, ran Ccleaner, rebooted and proceeded to recommence the download.... no go, it hung for a good half hour (I did the washing up while waiting) and I had to stop the process again.
I eventually got Fences to install correctly by restarting Impulse, resetting my data, restarting Impulse again and clicking the Fences download.
I may be wrong, but I think the issue was caused by keeping my settings and etc from the free version, because once all traces of it were eliminated, and Impulse was reset/restarted, Fences Pro installed and runs like a dream/without issue.