Software Update Manager error in phase PREP_INPUT/SELSTACKXML_ASK

Hi,

I'm trying to update ERP 6 EHP 6, SP8 to SP10 using SUM, and I'm getting the following error:

      Severe error(s) occured in phase PREP_INPUT/SELSTACKXML_ASK!

      Last error code set: RFC error system ECQ nr 00 function
      'OCS_API_GET_STACK_INFO' failed with code 3 key SYNTAX_ERROR: Syntax
      error in program SAPLOCS_XML .
   

Error in SAPup.log:

CURRENTPHASE PREP_INPUT/SELSTACKXML_ASK

...started at 20140225210752

# Using phase log file 'SELSTACKXMLA.LOG'.

..finished at 20140225210754 with status ABORTED.

# Error message set: 'RFC error system ECQ nr 00 function 'OCS_API_GET_STACK_INFO' failed with code 3 key SYNTAX_ERROR: Syntax error in program SAPLOCS_XML                             .'

...begin dialog at 20140225210754

Contents of file SELSTACKXMLA.LOG:

1 ETQ201 Entering upgrade-phase "PREP_INPUT/SELSTACKXML_ASK" ("20140225210752")

2 ETQ367 Connect variables are set for standard instance access

4 ETQ399 System-nr = '00', GwService = 'sapgw00' Client = '000'

4 ETQ399 Environment variables:

4 ETQ399   dbs_syb_schema=SAPSR3

4 ETQ399   auth_shadow_upgrade=<null>

1 ETQ206 Executing pre-phase DB specific actions.

1 ETQ200 Executing actual phase 'PREP_INPUT/SELSTACKXML_ASK'.

1 ETQ399 Phase arguments:

2 ETQ399 Arg[0] = ''

2 ETQ399 Arg[1] = 'ASK;READBASIC;CHECK_INITIAL'

1 ETQ399 Read XML stack configuration.

4 ETQ399 Copy stack file '/sapmedia/ECQ_SP10/stack.xml' to '/sapmedia/SUM/abap/tmp/stack.xml' temporarily to avoid access problems.

4 ETQ399 Reading stack content ...

4 ETQ399 ... reading stack configuration file "/sapmedia/SUM/abap/tmp/stack.xml"

1 ETQ359 RFC Login to: System="ECQ", AsHost="sapecq" Nr="00", GwHost="sapecq", GwService="sapgw00"

2 ETQ232 RFC Login succeeded

4 ETQ010 Date & Time: 20140225210753

1 ETQ233 Calling function module "OCS_API_GET_STACK_INFO" by RFC

2 ETQ373 parameter "IV_STACK_GUID" = ""

2 ETQ373 parameter "IV_STACK_FILE" = "/sapmedia/SUM/abap/tmp/stack.xml"

1EETQ235 Call of function module "OCS_API_GET_STACK_INFO" by RFC failed (error-status "3")

2EETQ360 RFC of "OCS_API_GET_STACK_INFO" failed:

2EETQ361 code/exception  : 3

2EETQ362 key             : SYNTAX_ERROR

2EETQ399 Syntax error in program SAPLOCS_XML                             .

4 ETQ010 Date & Time: 20140225210754

1 ETQ399 SYSMANDEBUG_ASCSSYSNUM: ''.

1 ETQ399 SYSMANDEBUG_ASCSHOST: ''.

1EETQ399 Last error code set is 'RFC error system ECQ nr 00 function 'OCS_API_GET_STACK_INFO' failed with code 3 key SYNTAX_ERROR: Syntax error in program SAPLOCS_XML                             .'

1EETQ204 Upgrade phase "SELSTACKXML_ASK" aborted with severe errors ("20140225210754")

Any Ideas?

Thanks in advance.

Odilon J. Bedin