I have set up a build step on TeamCity,as described here, to do automatic release deployments to our test server. But it is not using the latest nuget packages that was build in
There are more possible reasons for the problem.
To see the problems with Octopus go to Configuration -> Diagnostics
Another common problem is to use a Package Name #{variable}
in a deploy step
Currently it is not possible and Package Name should be set manually, for example MyWebSite
or MyWindowsService
. See UserVoice for this feature.