I'm geting System.BadImageFormatException error

Unity Engine
, , ,
1

I was importing “TerrainSampleAssets” and computer crashed, and i reopen unity and computer crashed again, and then i reopen unity again and i’m geting this error.

System.BadImageFormatException: Format of the executable (.exe) or library (.dll) is invalid.
   at Mono.Cecil.PE.ImageReader.ReadImage()
   at Mono.Cecil.PE.ImageReader.ReadImage(Disposable`1 stream, String file_name)
   at Mono.Cecil.ModuleDefinition.ReadModule(Disposable`1 stream, String fileName, ReaderParameters parameters)
   at Mono.Cecil.ModuleDefinition.ReadModule(String fileName, ReaderParameters parameters)
   at ApiUpdater.MovedFromOptimizer.Program.CollectMovedFromTypeNamesFromAssembly(String assemblyPath, StreamWriter outputFile, IAPIUpdaterListener logger)
   at ApiUpdater.MovedFromOptimizer.Program.RealMain(String[] args)
   at ApiUpdater.MovedFromOptimizer.Program.Main(String[] args)

How can i fix this?