Error when opening document with ECL control: INVALID_DATA

Hi Gurus,

I've tried to search the net for this problem but could not find anything and I'm stuck now.

Description:

we're using ECL to view attached documents (to POs etc.) which are stored through ArchiveLink on the content repository.

when we try to open this document, time-to-time we get following error:

Error when opening document with ECL control: INVALID_DATA

Message no. SDV004

by time-to-time I mean that when we try to open same attachment again it opens successfully (sometimes we need to re-open it 3-4 times to get it)

what we've tried is to enlarge timeout for HTTP protocol (tx SMICM, from former 30 to actual 60) but only effect we got is that we're waiting for the error longer time

It will be really great if anybody of you guys can give me an advice where the problem can be or where should I look and what to check

Thanks,

David