Problems Executing Stored Procedure OLEDB

<sigh> been doing all kinds of stuff in SSIS and then I get to what I thought should be simple: Running a stored procedure, and I've had nothing but headache:

OLEDB connection, ResultSet None

SQL Statement: EXEC dbo.pStoredProcedure ?, ?, ?, ?, ?, ?, ? OUTPUT

Parameters Mapping page:

User::gvSourceName Input VARCHAR 0, User::gvDestinationName Input VARCHAR 1, System::UserName Input VARCHAR 2 etc.. etc.. UserlvDataImportID Output NUMERIC 6

I've emptied my stored procedure out... but that doesn't seem to matter it doesn't ever run the procedure. If I try to parse the Query I get the error "The Query failed to parse. Attempted to read or write protected memory. This is often an indication that other memory is corrupt."

If I run the package I get the error: [Execute SQL Task] Error: Executing the query "EXEC dbo.pStoredProcedure ?, ?, ?, ?, ?, ?, ? OUTPUT" failed with the following error: "Unspecified error". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.

I've tried without the output variable and I still get the corrupt memory error and when I run the package I get: [Execute SQL Task] Error: Executing the query "EXEC dbo.pDataImportInfoInitINSERT ?, ?, ?, ?, ?, ?" failed with the following error: "Invalid character value for cast specification". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.

Even though I have made sure the datatypes match exactly between the parameters in the stored procedure and in the execute sql. I also know my connection is good as I use it in many steps before I get to the execute sql task...

Any ideas? I've tried just about everything I can think of short of building a whole new package...