Immediately after installing the Visual Studio 11 Developer Preview, I was no longer able to open a SSIS package in VS 2008. I uninstalled it and all the .NET 4.5 associated packages, reinstalled both VS 2008 and SQL 2008, but still it refuses to work.
This is the specific error I get when attempting to open one.
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An error prevented the view from loading. (Microsoft Visual Studio)
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The specified module could not be found. (Exception from HRESULT: 0x8007007E) (System.Windows.Forms)
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Program Location:
at System.Windows.Forms.UnsafeNativeMethods.CoCreateInstance(Guid& clsid, Object punkOuter, Int32 context, Guid& iid)
at System.Windows.Forms.AxHost.CreateWithoutLicense(Guid clsid)
at System.Windows.Forms.AxHost.CreateWithLicense(String license, Guid clsid)
at System.Windows.Forms.AxHost.CreateInstanceCore(Guid clsid)
at System.Windows.Forms.AxHost.CreateInstance()
at System.Windows.Forms.AxHost.GetOcxCreate()
at System.Windows.Forms.AxHost.TransitionUpTo(Int32 state)
at System.Windows.Forms.AxHost.CreateHandle()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at Microsoft.DataWarehouse.Design.ComponentDiagram.CreateDdsView(Control parentControl)
at Microsoft.DataTransformationServices.Design.DtsComponentDiagram.CreateDdsView(Control parentControl)
at Microsoft.DataWarehouse.Controls.DdsDiagramHostControl.set_ComponentDiagram(ComponentDiagram value)
at Microsoft.DataTransformationServices.Design.ControlFlowControl.set_ComponentDiagram(ComponentDiagram value)
at Microsoft.DataTransformationServices.Design.DtsPackageView.CreateControlFlowEditor(VsStyleToolBar pageViewToolBar)
at Microsoft.DataWarehouse.Design.EditorWindow.EnsureViewIsLoaded(EditorView view)