Any one of the following error messages can indicate package
- The parameter is incorrect
- Invalid class string
- The system cannot find the file specified
The DTS package format has undergone several changes since the original
release of SQL Server 7.0. Compatibility was broken between service pack
1 and 2 for SQL Server 7.0, and again with the introduction of SQL
Server 2000. Fortunately SQL Server 7.0 service pack 3 and above is capable of
using either the SQL Server 7.0 service pack 2 format or the SQL Server
Upward compatibility has been maintained throughout, but backward
compatibility has been lost. Therefore if you create a package on a SQL
Server 2000 client and then try and load or execute it on a machine with
a lower compatibility level you will see one of the error messages
To avoid these issues ensure all machines are on the same service pack.
If you have a mixed SQL Server 7.0 and SQL Server 2000 environment then
make sure you are using at least service pack 3 on all SQL Server 7.0 servers and
clients. It is important to remember that as DTS is a client side
application you must service pack client machines as well as servers.
An alternative workaround is to use package passwords. The encrypted
package format has not changed at all, so a password protected package
created on a SQL Server 2000 machine can still be read by an original
SQL Server 7.0 machine.
Whilst these error messages are not exclusive to this problem, it is
rare to see them otherwise.