Did you resolve this issue? I'm testing a solution where I am using SAP as the master and sending out internet calendar meetings. I am also receiving the same error message that the file ... is not a valid Internet Calendar file. I edited the attachment with notepad and striped out the blank lines and line numbering and I was able to open and accept the meeting in Outlook.
I was experiencing this same issue and have finally have it resolved with a code recommendation from SAP. Hopefully you have already performed all the actions as outlined in this document:
http://aspireopenmic.com/2011/06/29/lso-outlook-calendar-requests-as-attachments/
However this does not work with Outlook 2007/2010 - only with Outlook 2003. I had to do this additional work:
1) Copy Class CL_LSO_CRP_RENDER_EXAMPLE to ZCL_LSO_CRP_RENDER_EXAMPLE
2) Edit the method CREATE_VCAL of this new class.
- Comment all code out from this line onwards:
* BEGIN:VCALENDAR
ls_soli-line = 'BEGIN:VCALENDAR'.
APPEND ls_soli TO lt_soli.
.......
* Add CR/LF
LOOP AT lt_soli ASSIGNING <fs_soli>.
<fs_soli>-line+253(2) = cl_abap_char_utilities=>cr_lf.
ENDLOOP.
3) Add this statement:
DATA: helpstring TYPE string.
4) Add the following code within the method:
* BEGIN:VCALENDAR
CONCATENATE 'BEGIN:VCALENDAR' cl_abap_char_utilities=>cr_lf
INTO helpstring.* BEGIN:VCALENDAR
CONCATENATE helpstring 'VERSION:1.0' cl_abap_char_utilities=>cr_lf
INTO helpstring.* BEGIN:VEVENT
CONCATENATE helpstring 'BEGIN:VEVENT' cl_abap_char_utilities=>cr_lf
INTO helpstring.* ORGANIZER
CONCATENATE helpstring 'ORGANIZER:MAILTO:' ls_data-sender-smail
cl_abap_char_utilities=>cr_lf
INTO helpstring.* ATTENDEE
CONCATENATE helpstring 'ATTENDEE;ROLE=ATTENDEE:' ls_data-astxt '<' ls_data-amail '> '
cl_abap_char_utilities=>cr_lf
INTO helpstring.* DTSTART
CONCATENATE helpstring 'DTSTART:' ls_data-kbgda 'T'
INTO helpstring.
IF NOT ls_data-kbtim IS INITIAL.
CONCATENATE helpstring ls_data-kbtim INTO helpstring.
ENDIF.
CONCATENATE helpstring
cl_abap_char_utilities=>cr_lf
INTO helpstring.* DTEND
CONCATENATE helpstring 'DTEND:' ls_data-kndda 'T'
INTO helpstring.
IF NOT ls_data-kbtim IS INITIAL.
CONCATENATE helpstring ls_data-ketim INTO helpstring.
ENDIF.
CONCATENATE helpstring
cl_abap_char_utilities=>cr_lf
INTO helpstring.* LOCATION
IF NOT ls_data-b_ort IS INITIAL OR NOT ls_data-rstxt IS INITIAL.
CONCATENATE 'LOCATION:' ls_data-b_ort ls_data-rstxt
INTO l_subject SEPARATED BY space.
CONCATENATE helpstring l_subject
cl_abap_char_utilities=>cr_lf
INTO helpstring.
ENDIF.* CATEGORIES
CONCATENATE helpstring 'CATEGORIES;ENCODING=QUOTED-PRINTABLE:EDUCATION'
cl_abap_char_utilities=>cr_lf
INTO helpstring.* CLASS
CONCATENATE helpstring 'CLASS:PUBLIC'
cl_abap_char_utilities=>cr_lf
INTO helpstring.* SUMMARY
CONCATENATE text-001 ls_data-kstxt INTO l_subject SEPARATED BY space.
CONCATENATE helpstring 'SUMMARY;ENCODING=QUOTED-PRINTABLE:' l_subject
cl_abap_char_utilities=>cr_lf
INTO helpstring.* DESCRIPTION
CONCATENATE helpstring 'DESCRIPTION:' l_subject
cl_abap_char_utilities=>cr_lf
INTO helpstring.* END:VEVENT
CONCATENATE helpstring 'END:VEVENT'
cl_abap_char_utilities=>cr_lf
INTO helpstring.* END:VCALENDAR
CONCATENATE helpstring 'END:VCALENDAR'
cl_abap_char_utilities=>cr_lf
INTO helpstring.
CALL METHOD CL_DOCUMENT_BCS=>STRING_TO_SOLI
EXPORTING
IP_STRING = helpstring
RECEIVING
RT_SOLI = lt_soli.
5) Activate this class
6) Search for all occurances of where method CREATE_VCAL is used within class CL_LSO_CRP_RENDER_EXAMPLE
7) Replace following statement:
lr_document = cl_lso_crp_render_example=>create_vcal( lr_reader ).
with:
lr_document = zcl_lso_crp_render_example=>create_vcal( lr_reader ).
This should resolve any problems now with the calendar attachments.
