Invalid "--device-id" value

Morning... i am trying to build for iOS8 using the RC2 but i am getting this every time i try. i am using

Titanium Studio, build: 3.4.0.201409161931 SDK: 3.4.0 RC2 Xcode Version 6.0.1 (6A317) iOS SDK: 8.0 and iOS SDK: 7.1

by the way, in the list of devices, i have nothing ! Screenshot

Available iOS Simulators:
8.0
[ERROR] :  Invalid "--device-id" value "iPhone Retina (4 inch)"
  AB468E22-F3FB-488B-85D1-7FDAEA7B40F7  iPhone 4s
  B5AB46C5-E6E5-4894-B00C-603E4CA2AB47  iPhone 5
  B7ABC70A-5617-4773-A20A-759836952A2B  iPhone 5s
  643CE512-5C96-402D-AF64-FF87E2EAD26F  iPhone 6 Plus
  1AB4445E-8FD4-4B9F-8496-5FF1C75A5222  iPhone 6
  75192D5D-AC74-4583-8E07-9639DAA8D5B9  iPad 2
  E89326CC-E331-4396-A6B2-7F70116AEB00  iPad Retina
  1B677BE9-3CB8-4992-BDAD-BD903F5DBA28  iPad Air
  3EDF6FC3-E384-462F-B89E-74FD8C194C0B  Resizable iPhone
  FD7045AB-4FD1-4FC1-8525-412A4F2461C5  Resizable iPad
7.1
  83FF65E9-BF6D-4CFC-B767-98D1C4FC82FE  iPhone 4s
  89DD974E-711C-45E2-B821-D74B43CAC39A  iPhone 5
  9214E2C8-F08F-48B9-9604-A9CA2D2C4982  iPhone 5s
  BFB64487-DB82-409A-83A8-E0E649FEA929  iPad 2
  16510A47-8754-4EC7-9CC2-0CF3B4A40082  iPad Retina
  E8160723-01AE-4972-B9A2-9CCB56CDB7A9  iPad Air
7.0.3
  D26702D2-A915-4D8D-B6E8-91D69F62FA68  iPhone 4s
  D1D65B7E-E03C-439D-A1BB-EEFCB81EAD0B  iPhone 5
  5F49305E-1237-466B-A6BE-33B608ED79B6  iPhone 5s
  8BB70526-E9D4-4751-AAEE-3B16815D58CF  iPad 2
  45F7D87B-4FD3-4D02-8E40-8EF38D2A3636  iPad Retina
  3E35E2BD-C429-4B62-943C-DBDDDA7ECC55  iPad Air
For help, run: titanium help build

Thanks in advance...