Can't Excute SSIS package

So everything was working great. Now I have a few problems. The little play button is no longer available for me to puch and when I try a right click execute package a get a "Unexpected internal error: Invalid state for operation. (Microsoft Visual Studio)". Does anyone know how to fix this? Also when I try and copy tasks from within my package I get a "An error occurred while objects were being copied. SSIS Designer could not serialize the SSIS runtime objects. (Microsoft Visual Studio)"
followed by "Could not copy object 'package name' to the clipboard.
(Microsoft.DataTransformationServices.Design)" and then "Invalid access to memory location. (Exception from HRESULT: 0x800703E6) (Microsoft.SqlServer.ManagedDTS)"

Does anyone what might be wrong

Thanks in advance

good news is I have the same problem, bad news is I don't know why :s

If that can help, the details are

Unexpected internal error: Invalid state for operation. (Microsoft Visual Studio)

Emplacement du programme :

at Microsoft.DataWarehouse.ProgrammingByContract.State.NullCheck(Object obj)
at Microsoft.DataTransformationServices.Project.DataTransformationsPackageDebugger.ValidateAndRunDebugger(Int32 flags, DataWarehouseProjectManager manager, IOutputWindow outputWindow, DataTransformationsProjectConfigurationOptions options)
at Microsoft.DataTransformationServices.Project.DtsPackagesFolderProjectFeature.ExecuteTaskOrPackage(ProjectItem prjItem, String taskPath)

|||This seems to be a VS problem. I reinstalled Visual Studio and that fixed the problem. Well... at least it works now ;)
|||Yeah, my machine ran automatic updates and all of a sudden it came right.