Issue with e-mail attachments after upgrade

Hi Folks,

After upgrade from SAP CRM 7.0 to EhP2 attachments in e-mails sent using function module SO_NEW_DOCUMENT_ATT_SEND_API1 are appearing blank. The parameters passed are as follows:

CALL FUNCTION 'SO_NEW_DOCUMENT_ATT_SEND_API1'

EXPORTING

document_data = wa_doc_chng

put_in_outbox = c_x

commit_work = c_x

TABLES

packing_list = it_objpack

object_header = it_objhead

contents_bin = it_objbin

contents_txt = it_objtxt

receivers = it_reclist

EXCEPTIONS

too_many_receivers = 1

document_not_sent = 2

document_type_not_exist = 3

operation_no_authorization = 4

parameter_error = 5

x_error = 6

enqueue_error = 7

OTHERS = 8.

Any suggestions as to what has to be changed for the attachments to be generated correctly?

Thanks and regards,

Meenakshi