Error ERR_WIS_30270 to open webi report after to applied the SP9

Hi Experts!!!

I need a help about a problem after I applied the SP9. When I try to open a webi document, this message appear and report doesn't open:

"An internal error occured while calling 'openDocument' API. (Error: ERR_WIS_30270) (Error: INF)"

This error occur with some documents, and these documents were working before SP9, on SP6.

I took the file wid on FileStore folder of BO installation directory. I tried to open this file with Webi Rich Client SP6, and this worked (so, the document file is not corrupted), but with Webi Rich Client SP9 occurred the same error.

I'm working with BO 4.0 on Windows 2008 Server. My webi documents use BEx queries of BW 7.3.

Thanks for all answers!