I could not see unhandled exceptions ( MyService:RestServiceBase) on /elmah.axd path.
I've added http handlers for seeing errors.
<add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />
I've installed ServiceStack.Logging.Elmah
UPDATE
I've installed Elmah.Mvc package also
I can get errors in Controller's Action but I could not get service errors!
UPDATE
I'm not alone :) https://groups.google.com/forum/#!topic/servicestack/WSrM5CLL120
You need subscribe to
AppHostBase.ServiceExceptionHandler
events inConfigure
method which normally resides in AppHost class: