Backup fails due to insufficient disk space on local storage 9'764'877(0x95000D)

Ausführen der angeforderten Aktion fehlgeschlagen.
Zusätzliche Info:
--------------------
Fehlercode: 13
Module: 149
LineInfo: d1ab7fa1e56ec76e
Felder:
Nachricht: Ausführen der angeforderten Aktion fehlgeschlagen.
--------------------
Fehlercode: 236
Module: 16
LineInfo: 7bb42efe3c73323f
Felder:
Nachricht: Interner Fehler: Versuch auf emulierte Festplatte für ein nicht initialisiertes Objekt zuzugreifen
--------------------
Fehlercode: 94
Module: 83
LineInfo: 1b5da992938b2ab9
Felder:
Nachricht: Öffnen der Datendatei der Raw-Festplatte '[myFile].vmdk' fehlgeschlagen.
--------------------
Fehlercode: 144
Module: 83
LineInfo: c7610e0a857bedc1
Felder:
Nachricht: Erwarteter Task 'AttacScsiHardDisk' fehlgeschlagen. Ursache: Unzureichender Festplattenspeicher im Datenspeicher 'LocalStore (lc-01)'..
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Acronis Knowledge Base: http://kb.acronis.com/errorcode

Ereignis-Code: 0x0095000D+0x001000EC+0x0053005E+0x00530090

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We have got ABR11 Agent for VMware vSphere ESX(i) (Virtual Appliance) servers, which manage the backup for their assigned VM's.

Normaly, the first task of ABR11 is to generate a snapshot of the selected VM. After completion, it reconfigures the appliance VM and attaches the corresponding remote storage of the the selected VM which will be backuped. After the backup, it reconfigures the appliance VM again and removes the remote storage.

But this all fails while the reconfiguration when the target VM's disk usage raises and doesn't fit into the local storage of the appliance VM, and gives the error above. If i remember correctly ABR10 did pass over the local storage and put the backup directly to my remote storage.

Am i missing something im my configuration? I did a fresh install of ABR11 (removed ABR10 completely {except registry entrys})
Thank you in advance!