concerning this Version:

* Lightstreamer JavaScript Client
* Version 6.1.1 build 1640
* Contains: Lightstreamer/LightstreamerClient, Lightstreamer/Subscription, Lightstreamer/DynaGrid, Lightstreamer/StaticGrid
* Globals (namespaced)

Line 41, Col. 9: "break a"
Our ASP.NET MVC4.5 BundleMinifier says: "run-time error JS1019: Can't have 'break' outside of loop: break a".
Obviously it won't recognize the label. Maybe it's possible to omit the label and put the following two statements in the try-block.

Line 395, Col. 273: "break a"
It's just a suggestion, but I think it have to be "return a".