A2003 Query Runs Under XP, Not Vista

I apologize up front for how long this is, but the queries involved are a bit complex.

I developed a database in Access 2003 running on XP sp2 to score events for our dog club. Everything works. I recently had to migrate to Vista. I installed Access without a problem. No changes to the database were made. Almost everything works except for a few queries. I continually get the error "Object invalid or no longer set." This is not running on a network - it is local on the hard drive. Setting XP compatibility mode and runing as administrator do not help.

The query that is actually causing the problem is the third in a chain, meaning it queries a dataset produced by another query, which in turn queries a dataset produced by a third query. This all works under XP.

I have narrowed the problem down to the ORDER BY statement in the query (I prefer to work in SQL). If I remove one of the sort criteria, everything works, except the results are displayed in the wrong order. It does not matter if I click the "run query" button on my form, or simply execute the query from the list of queries, the same error occurs. This is where I'm stuck.

Here is the chain. This query pulls data out of multiple tables and performs some point total calculations. This one is rather complex, but works fine. It produces a blob dataset of all entries for all events and sets points for each entry.

SELECT tblResults.Event_ID, tblEvents.Event_Name, tblClass.Class, tblDogs.Dog_Name, tblDogs.ID, tblDogs.Owner, tblDogs.Sex, tblResults.Dog_Wt, tblResults.Cert, tblResults.Ex, tblResults.Cplt_Wt, tblResults.Time, tblResults.Final_Wt, tblResults.Dist, tblResults.Place, IIf(tblResults!Cplt_Wt<400,0,5) AS Bonus, IIf([Bonus]=0,0,IIf(tblClass!Class="D",(tblEvents!D_Count-(tblResults!Place-1)+[Bonus]),IIf(tblClass!Class="C",(tblEvents!C_Count-(tblResults!Place-1)+[Bonus]),IIf(tblClass!Class="B",(tblEvents!B_Count-(tblResults!Place-1)+[Bonus]),IIf(tblClass!Class="A",(tblEvents!A_Count-(tblResults!Place-1)+[Bonus]),(tblEvents!O_Count-(tblResults!Place-1)+[Bonus])))))) AS Points, Round(tblResults!Cplt_Wt/tblResults!Dog_Wt,2) AS xbdywt
FROM tblClass INNER JOIN (tblEvents INNER JOIN (tblDogs INNER JOIN tblResults ON tblDogs.ID=tblResults.Dog_ID) ON tblEvents.Event_ID=tblResults.Event_ID) ON tblClass.Weight=tblResults.Dog_Wt;


That resulting dataset feeds the next query, which also works fine. This one sums the points for each entrant by class for the season, only selecting entrants that have been in 3 or more events.

SELECT DISTINCTROW qryAll_Results.Class, qryAll_Results.Dog_Name, qryAll_Results.Owner, Sum(qryAll_Results.Points) AS Points
FROM qryAll_Results INNER JOIN qryPulls_Entered ON qryAll_Results.ID=qryPulls_Entered.ID
WHERE qryPulls_Entered.CountOfID>3
GROUP BY qryAll_Results.Class, qryAll_Results.Dog_Name, qryAll_Results.Owner, qryAll_Results.ID;


This last query is the one causing the headache. This one pulls the 10 entrants with the most points for a class, sorts them by points, then assigns 1st-10th place.

SELECT TOP 10 qryOverall_Totals_All_Classes.Dog_Name, qryOverall_Totals_All_Classes.Owner, qryOverall_Totals_All_Classes.Points, ((SELECT COUNT(*) FROM qryOverall_Totals_All_Classes AS T WHERE T.Class = "A" AND T.Points > qryOverall_Totals_All_Classes.Points)+1) AS Place
FROM qryOverall_Totals_All_Classes
WHERE (((qryOverall_Totals_All_Classes.Class)="A"))
ORDER BY qryOverall_Totals_All_Classes.Class, qryOverall_Totals_All_Classes.Points DESC;

If you remove 'qryOverall_Totals_All_Classes.Points DESC' from the ORDER BY statement, the query runs. If you leave it in, it generates the error "Object invalid or no longer set". I've tried using the alias, but that didn't work either.

Any thoughts? I can post the database somewhere if someone needs to see the whole thing.