What's the problem for Richiamo membro non riuscito (0xE000B)?

Richiamo membro non riuscito (0xE000B)
path = "choose when tnd.State = 1: choose when decision=1: tnd.Apply when decision=2: set templates = Templates.Messenger; set params = templates.CreateParameters; params.Title('Acronis Try&Decide'); params.Message('Il computer sarà riavviato e il sistema sarà riportato allo stato precedente all avvio della modalità Prova.'); params.Style(templates.Styles.Information); params.Buttons(templates.Buttons.Ok); GetMessenger.ShowMessage(params); tnd.Cancel end when tnd.State = 0: set regkey = GetObject('Registry').LocalMachine.OpenSubKey('Software\Acronis\TrueImageHome\Settings'); regkey.OpenValue('ProtectOnlySysPartition').Delete; regkey.CreateValue('ProtectOnlySysPartition', ProtectSystemPartition); set tndResult = tnd.Activate(ProtectSystemPartition); choose when tndResult: set state = select * from regkey.Values where $value.Name='TnDNotShowAgain' end; choose when state.IsValid: choose when state.Value.Value=0: set form=Suite.LoadForm('TryAndDecideStarted'); form.Parent(this); form.SetData('regkey', regkey); form.SetData('Verbs', Verbs); form.RunModal() end otherwise regkey.CreateValue('TnDNotShowAgain', false); set form=Suite.LoadForm('TryAndDecideStarted'); form.Parent(this); form.SetData('regkey', regkey); form.SetData('Verbs', Verbs); form.RunModal() end otherwise set form=Suite.LoadForm('TryAndDecideNotStarted'); form.Parent(this); form.RunModal() end end; this.>>>StopModal(1)",
token = "StopModal",
line = 1),
column = 564)
Tag = 0x298D61E7C0088C8C
Attempt to use null reference. (0x10001)
Tag = 0xA05C4C827FD2D8F3