Since updating to VS2013, we receive this error when running our (MCV4) web app:
The controller for path \'/9ac086a69364466a841e03e001f946fd/arterySignalR/pi
This happens to be a known issue with SignalR and has been fixed in SignalR 2.0.1 and 1.1.5:
2.0.1: https://github.com/SignalR/SignalR/issues/2569 (not yet released)
1.1.5: https://github.com/SignalR/SignalR/issues/2570 (not yet released)
Long story short, nothing you can do to change it, should just wait for the next release of browser link which has a newer version of SignalR.