Execute DTS 2000 Package Task: Invalid GUID When Setting PackageId Via Expression

Hi there,

I'm creating an SSIS package that will execute legacy dts packages. The package to be executed is decided at runtime using a sql query task.

Executing a dts package statically works fine, but when I try to set the details of the dts to be run via expressions, I get the error below.

To make it dynamic, I created a variable of type string, and put the package name in here. I also have a string variable for the packageid. Then I set up an expression on the Execute DTS 2000 Package Task that sets the PackageName & PackageID property to this variable.

The PackageId is a string variable I've retrieved using:

select top 1 name,
cast(id AS varchar(50)) id,
cast(versionid AS varchar(50)) versionid
from sysdtspackages
where name = @PackageName
order by createdate desc

When I use the task to set the package id it works find (by selecting a dts, then changing the name), but when I try to provide the package id I get this message:


Error: 0x0 at Execute DTS 2000 Package Task: System.Runtime.InteropServices.COMException (0x8004040E): Invalid GUID specified.
at DTS.PackageClass.LoadFromSQLServer(String ServerName, String ServerUserName, String ServerPassword, DTSSQLServerStorageFlags Flags, String PackagePassword, String PackageGuid, String PackageVersionGuid, String PackageName, Object& pVarPersistStgOfHost)
at Microsoft.SqlServer.Dts.Tasks.Exec80PackageTask.PackageUtils.LoadDTS8Package(String pkgSrc, String sourceUser, String sourcePwd, Int32 srcType, Boolean bUseTrustedConnection, String packageName, String packagePassword, String packageID, String packageVersionGUID)
at Microsoft.SqlServer.Dts.Tasks.Exec80PackageTask.Exec80PackageTask.LoadPackage()
at Microsoft.SqlServer.Dts.Tasks.Exec80PackageTask.Exec80PackageTask.ExecuteThread()
Task failed: Execute DTS 2000 Package Task

but the method signature specifies String PackageGuid, and it is a string..

any ideas??

i tried casting the variable like so:

(DT_GUID) @[User:TSPkgId], as the versionid is a uniqueidentifier on sysdtspackages.. It didn't like that at all (can't cast from type DT_WSTR to DT_GUID error code 0xC00470C2)