ALC-RES-001-019: ... PDFCosParseException: Expected 'xref'

Hello,

when trying to reader-extend pdf document via LC ES2 service Apply Usage Rights, we got following:

2010-06-04 10:45:29,656 ERROR [com.adobe.livecycle.readerextensions.ReaderExtensionsImplementation] ALC-RES-001-019: The input document is not a valid document type for this operation.
com.adobe.internal.pdftoolkit.core.exceptions.PDFCosParseException: Expected 'xref' : 437523

Reader extending by Adobe Acrobat with the same file works great.

I found, that something with 'xref' was fixed in SP 1b in LC ES (1) (http://pdflab.com/forum/viewtopic.php?t=161)

I haven't found any patches for ES2, searching the http://www.adobe.com/support/livecycle/

I would like to ask :

a) do you have any advice how to fix it

b) are there any updates / patches / service packs for LC ES2 ?

Thanks.