This morning, I started having problems with Visual Studio 2005 on XP when I tried to create an SSIS project; I was getting an error message about the failure to create an SSIS runtime object, with the reference "Unable to cast COM of type 'Microsoft.SqlServer.DTS.Runtime.Wrapper.PackageNeutralClass' to interface type". Digging here and elsewhere on the Net, I used regsvr32 to re-register msxml3.dll, msxml6.dll, and dts.dll. This allowed me to create a new SSIS project, but I was unable to add a data flow task to the Control Flow pane -- when I dragged the control onto the pane, nothing happened, and when opened the Data Flow pane and clicked on the 'No data flow task has been defined. Click here to create a data flow task" link, I got a 'Failed to create the task. The designer could not be initialized." error. Searching here and on the Net, I uninstalled and reinstalled the SQL Server 2005 workstation tools.
After doing this, I am still unable to create a data flow task by dragging the task out of the toolbox; the pointer assumes the right form for the drag-and-drop, as it does for other tasks, but when I release the mouse button, nothing happens. However, when I go to the Data Flow pane and click on the 'click here to create a new data flow task', it creates the task, and I am able to use copy-and-paste to make copies of the data flow task
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