Backup & Recovery 10 version 10.0.13762 randomly removes backup job

Hello all,

I have a problem that is bugging me and my colleague for a couple of weeks now.

A customer of our company has a Citrix server with the latest remote agent installed. (version 10.0.13762)
Before this version we had an older version installed with the same problem.

On our SBS server we have the Backup & Recovery software installed (version 10.0.13762)
Before this version we had an older version installed with the same problem.

A little side note: I performed an upgrade, not a clean install on all the Acronis products we have installed.

The problem:

Randomly, the agent on the Citrix server or the software on the SBS server removes the backup job.
the log files generate a lot of errors:

1st error:
Log Entry Details
Type: Error
Date and time: 19/03/2012 8:33:20
Backup plan: [None]
Task: [None]
Code: 5.242.881(0x500001)
Module: 80
Owner: administrator
Message:
Failed to retrieve parameter 'Windows name'.
Additional info:
--------------------
Error code: 1
Module: 80
LineInfo: 6ddb03e02a4503c4
Fields: $module : C:\Program Files (x86)\Acronis\BackupAndRecovery\mms.exe
Message: Failed to retrieve parameter 'Windows name'.
--------------------
Error code: 1006
Module: 20
LineInfo: c523d9a02d03d484
Fields:
Message: Failed to enumerate the WMI class object.
--------------------
Error code: 65520
Module: 0
LineInfo: bd28fdbd64edb8c1
Fields: code : 2147749911
Message: Unknown Win32 error
--------------------
Acronis Knowledge Base: http://kb.acronis.com/errorcode/

Event code: 0x00500001+0x001403EE+0x0000FFF0+0x80041017

This errors occurs around 23 times in a time span of 15 minutes and then this error pops up:
Log Entry Details
Type: Warning
Date and time: 19/03/2012 8:49:21
Backup plan: [None]
Task: [None]
Code: 8.454.149(0x810005)
Module: 129
Owner: administrator
Message:
Managed entity 'FFF8B134-0B5A-8013-C791-5F9990BD13B9' cannot be recovered.
Additional info:
--------------------
Error code: 5
Module: 129
LineInfo: f0f9c9582df62cd8
Fields: $module : C:\Program Files (x86)\Acronis\BackupAndRecovery\mms.exe
Message: Managed entity 'FFF8B134-0B5A-8013-C791-5F9990BD13B9' cannot be recovered.
--------------------
Error code: 2
Module: 222
LineInfo: 82e71ec461902a0b
Fields:
Message: Failed to open file '5935_FFF8B134-0B5A-8013-C791-5F9990BD13B9'.
--------------------
Error code: 10
Module: 4
LineInfo: f35f747b3b21f7f2
Fields: function : CreateFileW, filename : \\?\C:\ProgramData\Acronis\BackupAndRecovery\MMS\Temp\5935_FFF8B134-0B5A-8013-C791-5F9990BD13B9
Message: Error occurred while creating the file.
--------------------
Error code: 65520
Module: 0
LineInfo: bd28fdbd64edb8bc
Fields: code : 2147943850
Message: Er zijn onvoldoende systeembronnen beschikbaar om aan de aanvraag te voldoen (translated: Insufficient system resources exist to complete the requested service)

Followed by error:
Log Entry Details
Type: Warning
Date and time: 19/03/2012 8:49:22
Backup plan: [None]
Task: [None]
Code: 8.454.148(0x810004)
Module: 129
Owner: administrator
Message:
Managed entity '673C1CEB-DA8D-1396-4304-460092510962' is corrupt.
Additional info:
--------------------
Error code: 4
Module: 129
LineInfo: f0f9c9582df62ccc
Fields: $module : C:\Program Files (x86)\Acronis\BackupAndRecovery\mms.exe
Message: Managed entity '673C1CEB-DA8D-1396-4304-460092510962' is corrupt.
--------------------
Error code: 1
Module: 4
LineInfo: 7ceb2cdc9fb12027
Fields: function : ReadFile
Message: Error occurred while reading the file.
--------------------
Error code: 65520
Module: 0
LineInfo: bd28fdbd64edb8bc
Fields: code : 2147943850
Message: Er zijn onvoldoende systeembronnen beschikbaar om aan de aanvraag te voldoen

After this last error the backup tasks are gone and are not running at the background.
Anyone with an idea on this problem?

I am recreating the backupjob every time it gets deleted, but that is not the way the cookie should crumble.
Any help on this matter would be appreciated!