Workflow Soluiton

When a try to open a Workflow Project

the syste show this error.

how to proceed to fix ?

Could not read in object
Unable to extract Zip File
Unexpected EOF

System.Exception: Could not read in object  ---> System.Exception: Unable to extract Zip File ---> ICSharpCode.SharpZipLib.SharpZipBaseException: Unexpected EOF
   em ICSharpCode.SharpZipLib.Zip.Compression.Streams.InflaterInputBuffer.Fill()
   em ICSharpCode.SharpZipLib.Zip.Compression.Streams.InflaterInputStream.Read(Byte[] b, Int32 off, Int32 len)
   em ICSharpCode.SharpZipLib.Zip.ZipInputStream.BodyRead(Byte[] b, Int32 off, Int32 len)
   em ICSharpCode.SharpZipLib.Zip.ZipInputStream.Read(Byte[] destination, Int32 index, Int32 count)
   em LogicBase.Framework.ZipArchiveMap.ReadIn(Stream compressedStream)
   --- Fim do rastreamento de pilha de exceções internas ---
   em LogicBase.Framework.ZipArchiveMap.ReadIn(Stream compressedStream)
   em LogicBase.Framework.ZipArchiveMap..ctor(FileInfo info, Boolean readInExisting)
   em LogicBase.Framework.ObjectStorage.Deserialize(FileInfo fromFile)
   --- Fim do rastreamento de pilha de exceções internas ---
   em LogicBase.Framework.ObjectStorage.Deserialize(FileInfo fromFile)
   em LogicBase.Core.AbstractOrchestrationProject.GetComponentModelPrivate(Model model, Type componentModelType)
   em LogicBase.Core.AbstractOrchestrationProject.GetComponentModel(Model model)
   em LogicBase.Tool.ProjectTree.ModelNode..ctor(ProjectTreeView view, AbstractOrchestrationProject project, Model model)
   em LogicBase.Tool.ProjectTree.ProjectNode.CreateModelNode(Model model)
   em LogicBase.Tool.ProjectTree.ProjectNode..ctor(ProjectTreeView view, AbstractOrchestrationProject project)
   em LogicBase.Tool.ProjectTree.ProjectTreeView.SetProjectCore(AbstractOrchestrationProject project)
   em LogicBase.Tool.ProjectTree.ProjectTreeView.set_Project(AbstractOrchestrationProject value)
   em LogicBase.Tool.MainForm.SetProject(AbstractOrchestrationProject newProject)
   em LogicBase.Tool.MainForm.set_Project(AbstractOrchestrationProject value)
   em LogicBase.Tool.Program.LaunchTool(String[] args)
   em LogicBase.Tool.ToolInitilizationHelper.Main(String[] args)

Someone posted something to this very similar a few weeks ago, it appears that the serialization of the project failed on save or close. Do you have access to a backup of this project? It should be in Workflow Designer\Projects\Backup if it's there.

Thanks Reecardo.

I recovery project by backup.