Index Server Error MSIDX 0x8004181d... HELP

p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;margin-bottom:.0001pt;font-size:11.0pt;font-family:'Calibri','sans-serif';}
span.EmailStyle15
{font-family:'Calibri','sans-serif';color:#1F497D;}
.MsoChpDefault
{font-size:10.0pt;}
@page Section1
{size:8.5in 11.0in;margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}



I had this query that was working fine before, but suddenly start giving me errors. Anyone can give me an idea where do I look for?

I get the error



p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;margin-bottom:.0001pt;font-size:11.0pt;font-family:'Calibri','sans-serif';}
.MsoChpDefault
{font-size:10.0pt;}
@page Section1
{size:8.5in 11.0in;margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}



[OLE/DB provider returned message: There is no catalog. ]
OLE DB error trace [OLE/DB Provider 'MSIDXS' ICommandText::Execute returned 0x8004181d].
Msg 7320, Level 16, State 2, Line 1Could not execute query against OLE DB provider 'MSIDXS'.


this is the query where BookPDF is a link index server.




Code Snippet

select * from articles INNER JOIN




((SELECT Articles_id as XID,FTBL.Rank from Articles inner join
OpenQuery(BookPDF,'select rank,filename from scope('' "" '')
where contains(contents,'' legal '')') as FTBL on Articles.[book_pdf] like '%' + FTBL.[filename] ) Union (SELECT Articles_id as XID,Keytbl.rank from Articles inner join Containstable(Articles,*,'legal') as KEYTBL on Articles.Articles_id = KEYTBL.[Key] )) as XTBL on Articles.Articles_id = XTBL.XID where (newsletter_name NOT IN(select Newsletters_id from Newsletters where Product IN (23,24)) AND (dont_show_in_search = 0
))
order by issue_date desc