Error al conectar BD Firebird

[Angel.Matilla]

Empezado por Casimiro Notevi

gbak -r -p 8192 -v -user zzzzzzz -password yyyyyy basedatos.fbk basedatos.fdb

He probado esta línea. Se restaura la base de datos; he sacado esta información al restaurar:

gbak: opened file c:\datcol\tablas\colegio_ant\20130911092620.gbk
gbak: backup file is compressed
gbak:created database c:\datcol\tablas\colegio_ant\colegio2.gdb, page_size 8192 bytes
gbak:started transaction
gbak:restoring domain RDB$1
gbak:restoring domain RDB$2
[...]
gbak: activating and creating deferred index ALUMNOS
gbak: activating and creating deferred index REFREC
gbak: committing metadata
gbak:finishing, closing, and going home

Pero sigue sin poderse abrir.