USE master;
GO
SELECT name, physical_name AS CurrentLocation, state_desc
FROM sys.master_files
WHERE database_id = DB_ID(N'master')

SELECT name, physical_name AS CurrentLocation, state_desc
FROM sys.master_files
WHERE database_id = DB_ID(N'tempdb')

SELECT name, physical_name AS CurrentLocation, state_desc
FROM sys.master_files
WHERE database_id = DB_ID(N'model')

SELECT name, physical_name AS CurrentLocation, state_desc
FROM sys.master_files
WHERE database_id = DB_ID(N'msdb')

Result:

Description:
This error message appears when you try to call the procedure sp_makewebtask but the output file cannot be opened.

Consequences:
The T-SQL statement can be parsed, but causes the error at runtime.

Resolution:
Errors of the Severity Level 11 are generated by the user and are corrigible by the user. The statement cannot be executed this way. You must specify a valid and accessible path. Also you have to make sure that the Service Logon account for SQL Server has appropriate rights to write to the specified location.

Versions:
All versions of SQL Server.

Example(s):

-- In this example we try to call the sp_makewebtask procedure
-- to output the result to a file on drive A:\. As our machine
-- does not have such a drive, the error is raised.

EXEC sp_makewebtask 'A:\test.html','SELECT * FROM Northwind.dbo.Orders' 

Remarks:

How to change the SQL Server or SQL Server Agent service account without using SQL Enterprise Manager in SQL Server 2000 or SQL Server Configuration Manager in SQL Server 2005:  http://support.microsoft.com/kb/283811