I used the MSI installer and from what I can tell everything installed correctly but the error message below was generated upon starting the service. This is a brand new installation on my development computer. I ran into the same issue when I attempted to install it on my production server. As an experiment I installed RavenDB-Unstable-Build-2711 in my development computer and everything worked fine unfortunately I need to be able to deploy this to a production environment eventually.
RavenDB service failed to start because of an error
System.InvalidOperationException: Could not open transactional storage: C:\RavenDb-Server\Database\System\Data ---> Microsoft.Isam.Esent.Interop.EsentSecondaryIndexCorruptedException: Secondary index is corrupt. The database must be defragmented
at Microsoft.Isam.Esent.Interop.Api.Check(Int32 err) in C:\Work\ravendb\SharedLibs\Sources\managedesent-61618\EsentInterop\Api.cs:line 2736
at Raven.Storage.Esent.TransactionalStorage.EnsureDatabaseIsCreatedAndAttachToDatabase() in c:\Builds\RavenDB-Stable\Raven.Database\Storage\Esent\TransactionalStorage.cs:line 440
at Raven.Storage.Esent.TransactionalStorage.Initialize(IUuidGenerator uuidGenerator, OrderedPartCollection`1 documentCodecs) in c:\Builds\RavenDB-Stable\Raven.Database\Storage\Esent\TransactionalStorage.cs:line 337
--- End of inner exception stack trace ---
at Raven.Storage.Esent.TransactionalStorage.Initialize(IUuidGenerator uuidGenerator, OrderedPartCollection`1 documentCodecs) in c:\Builds\RavenDB-Stable\Raven.Database\Storage\Esent\TransactionalStorage.cs:line 351
at Raven.Database.DocumentDatabase..ctor(InMemoryRavenConfiguration configuration) in c:\Builds\RavenDB-Stable\Raven.Database\DocumentDatabase.cs:line 226
at Raven.Server.RavenDbServer..ctor(RavenConfiguration settings) in c:\Builds\RavenDB-Stable\Raven.Server\RavenDbServer.cs:line 30
at Raven.Server.RavenService.<OnStart>b__0() in c:\Builds\RavenDB-Stable\Raven.Server\RavenService.cs:line 37