Service Bus Gateway is not starting.
First of all I have tried completely uninstalling all Azure/Fabric/Service Bus type SDKs and installations. I have installed both
Make sure any/all RabbitMQ service(s) are all stopped. (Or anything that uses the AMQP protocol)
TL;DR;
sn -Vr Microsoft.Cloud.Common.AzureStorage.dll
gacutil /i Microsoft.Cloud.Common.AzureStorage.dll
This issue was caused by installing the Visual Studio 2015 RC. Thankfully someone else has already experienced this and an answer has been posted.
Please see this answer on How do I report a bug in Windows Server Service Bus?
For whatever reason if the Dropbox link becomes obsolete. I have added it to Github.
If you received this error after updating to NET framework v4.6+ then Microsoft have a fix for this now, download this Update for Service Bus Server 1.1 (KB3086798) http://www.microsoft.com/en-us/download/details.aspx?id=49496