ALSM_EXCEL_TO_INTERNAL_TABLE not working in desktop but works in a laptop!

hi

this fm uploads the data to int table in a laptop, but it fails in any of our PCs (we use citrix to log in)...when working in the desktops, CREATE OBJECT application 'Excel.Application' -- this statement fails and returns a subrc of 2 and the overall fm's return code is 3...what could be the cause for this strange problem?

Sathish. R