HP Data Protector: JSONizer error when restoring from StoreOnce

After installing the Data Protector patch bundle 8.13, you may ran into this error when trying to restore data from a HP StoreOnce appliance.

[Normal] From: RSM@dpcm.lab.local ""  Time: 04.12.2014 09:13:10
	Restore session 2014/12/04-8 started.

[Normal] From: RMA@fileserver.lab.local "D2D_GW1 [GW 6408:0:7255964966039732580]"  Time: 04.12.2014 09:13:12
	STARTING Media Agent "D2D_GW1 [GW 6408:0:7255964966039732580]"

[Normal] From: RMA@fileserver.lab.local "D2D_GW1 [GW 6408:0:7255964966039732580]"  Time: 04.12.2014 09:13:13
	Loading medium from slot 192.168.200.101Store_1257902bf_54796efc_04f4_005c to device D2D_GW1 [GW 6408:0:7255964966039732580]

[Major] From: RMA@fileserver.lab.local "D2D_GW1 [GW 6408:0:7255964966039732580]"  Time: 04.12.2014 09:13:15
[90:52]  	192.168.200.101Store_1257902bf_54796efc_04f4_005c
	Cannot read from device (JSONizer error: Device read failure)

[Normal] From: RMA@fileserver.lab.local "D2D_GW1 [GW 6408:0:7255964966039732580]"  Time: 04.12.2014 09:13:15
	Unloading medium to slot \\192.168.200.101\Store_1\257902bf_54796efc_04f4_005c from device D2D_GW1 [GW 6408:0:7255964966039732580]

[Normal] From: RMA@fileserver.lab.local "D2D_GW1 [GW 6408:0:7255964966039732580]"  Time: 04.12.2014 09:13:15
	ABORTED Media Agent "D2D_GW1 [GW 6408:0:7255964966039732580]"

[Normal] From: RSM@dpcm.lab.local ""  Time: 04.12.2014 09:13:15

	Restore Statistics:
          
		Session Queuing Time (hours)         0,00        
		------------------------------------------- 
		Completed Disk Agents ........          0          
		Failed Disk Agents ...........          1          
		Aborted Disk Agents ..........          0          
		------------------------------------------- 
		Disk Agents Total  ...........          1          
		===========================================      
		Completed Media Agents .......          0          
		Failed Media Agents ..........          0          
		Aborted Media Agents .........          1          
		------------------------------------------- 
		Media Agents Total  ..........          1          
		===========================================      
		Mbytes Total .................       0 MB        
		Used Media Total .............          1          
		Disk Agent Errors Total ......          0

This problem is known and it is described in QCCR2A56465. A fix is available (new BMA, CMA, MMA and RMA binaries). Simply open a service request and ask for the fix. Make sure that you add a copy of the session messages or a screenshot to the service request.