Problemas con el servicio en una nueva instalación

Hola,

Acabo de descargar e instalar la versión más reciente de Bizagi Studio (creo que es la 10.7) y no logro crear un nuevo proyecto. Seguí todos los pasos normales de la instalación, en una máquina completamente nueva, y al abrir Bizagi Studio e intentar crear un nuevo proyecto me sale el siguiente error:

1. "The server BIZAGI-PC is unreachable. Make sure that the Bizagi Engine Operations Service is running and that your user is included in the server's Bizagi group. For more information ....".

Ya revisé la lista de servicios instalados y no hay ninguno que tenga el nombre indicado. Revisé también los grupos a los que pertenece mi usuario (Bizagi) y descubrí que aunque pertenece al grupo de administradores no pertenece a ningún grupo de Bizagi. Miré los grupos de usuarios (locales) y no hay ningún grupo de Bizagi. Intenté crear el grupo Bizagi y me sale un error que dice:

1. "Ocurrió el siguiente error al intentar crear el grupo Bizagi en el equipo BIZAGI-PC: La cuenta ya existe"

Por otro lado intenté instalar el servicio usando el archivo installx64.bat (ejecución como administrador) y me salió el siguiente error:

1. C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsService>CD /D "C:\Program
2. Files\Bizagi\Bizagi Studio\ServerOperationsService\"
3. C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsService>C:\WINDOWS\Microso
4. ft.NET\Framework64\v4.0.30319\installutil /name=BizAgi_ServerOperationsService B
5. izAgi.ServerOperationsService.exe
6. Microsoft (R) .NET Framework Installation utility Version 4.0.30319.1
7. Copyright (c) Microsoft Corporation. All rights reserved.
8. Running a transacted installation.
9. Beginning the Install phase of the installation.
10. See the contents of the log file for the C:\Program Files\Bizagi\Bizagi Studio\S
11. erverOperationsService\BizAgi.ServerOperationsService.exe assembly's progress.
12. The file is located at C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsSer
13. vice\BizAgi.ServerOperationsService.InstallLog.
14. Installing assembly 'C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsServi
15. ce\BizAgi.ServerOperationsService.exe'.
16. Affected parameters are:
17. logtoconsole =
18. name = BizAgi_ServerOperationsService
19. assemblypath = C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsService\
20. BizAgi.ServerOperationsService.exe
21. logfile = C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsService\BizAg
22. i.ServerOperationsService.InstallLog
23. Group Bizagi not detected
24. Creating Group Bizagi
25. An exception occurred in the OnBeforeInstall event handler of WindowsService.Win
26. dowsServiceInstaller.
27. System.Runtime.InteropServices.COMException: La cuenta ya existe.
28. An exception occurred during the Install phase.
29. System.InvalidOperationException: An exception occurred in the OnBeforeInstall e
30. vent handler of WindowsService.WindowsServiceInstaller.
31. The inner exception System.Runtime.InteropServices.COMException was thrown with
32. the following error message: La cuenta ya existe.
33. .
34. The Rollback phase of the installation is beginning.
35. See the contents of the log file for the C:\Program Files\Bizagi\Bizagi Studio\S
36. erverOperationsService\BizAgi.ServerOperationsService.exe assembly's progress.
37. The file is located at C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsSer
38. vice\BizAgi.ServerOperationsService.InstallLog.
39. Rolling back assembly 'C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsSer
40. vice\BizAgi.ServerOperationsService.exe'.
41. Affected parameters are:
42. logtoconsole =
43. name = BizAgi_ServerOperationsService
44. assemblypath = C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsService\
45. BizAgi.ServerOperationsService.exe
46. logfile = C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsService\BizAg
47. i.ServerOperationsService.InstallLog
48. An exception occurred during the Rollback phase of the WindowsService.WindowsSer
49. viceInstaller installer.
50. System.ArgumentException: The savedState dictionary does not contain the expecte
51. d values and might have been corrupted.
52. An exception occurred during the Rollback phase of the installation. This except
53. ion will be ignored and the rollback will continue. However, the machine might n
54. ot fully revert to its initial state after the rollback is complete.
55. The Rollback phase completed successfully.
56. The transacted install has completed.
57. The installation failed, and the rollback has been performed.
58. Presione una tecla para continuar . . .

Lo que quedó en el log de instalación es lo siguiente:

1. "Running a transacted installation.
2. Beginning the Install phase of the installation.
3. See the contents of the log file for the C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsService\BizAgi.ServerOperationsService.exe assembly's progress.
4. The file is located at C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsService\BizAgi.ServerOperationsService.InstallLog.
5. An exception occurred during the Install phase.
6. System.InvalidOperationException: An exception occurred in the OnBeforeInstall event handler of WindowsService.WindowsServiceInstaller.
7. The inner exception System.Runtime.InteropServices.COMException was thrown with the following error message: La cuenta ya existe.
8. .
9. The Rollback phase of the installation is beginning.
10. See the contents of the log file for the C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsService\BizAgi.ServerOperationsService.exe assembly's progress.
11. The file is located at C:\Program Files\Bizagi\Bizagi Studio\ServerOperationsService\BizAgi.ServerOperationsService.InstallLog.
12. The Rollback phase completed successfully.
13. The transacted install has completed."

Finalmente, el archivo "BizAgi.ServerOperationsService.InstallLog." no existe.

¿Qué puede estar pasando? ¿Donde busco otro grupo que se llame Bizagi y que pueda estar generando la colisión de nombres?