In trying to run the Aurelia demo app in Visual Studio (2013 update 4) using Typescript (v1.4), I am running into this dreaded error in TS files for views. 

```
The breakpoint will not currently be hit. No symbols have been loaded for this document.

```

This set up is very similar to the original in that config.js is used with SystemJS. I am running it in IIS express in IE 11.

If the Aurelia set up is changed to a one bundled JS file and requiredJS is used instead, the Typescript debugging works fine in VS. The breakpoint in this case shows up under '..in process "iexplore.exe"'.

The map files are generated in both cases. All the debugging flags are set the same for the project.

Can anyone think of a way to fix the TYpescript debugging?

Debugging works fine in Chrome browser debugger for both versions.