Game crash on start

My Terraria crashes on start up with this Error message. Please help!


5/30/2019 10:02:19 PM
System.IO.IOException: Der Cloudvorgang ist ungültig.

at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.ReadCore(Byte[] buffer, Int32 offset, Int32 count)
at System.IO.FileStream.Read(Byte[] array, Int32 offset, Int32 count)
at System.IO.File.InternalReadAllBytes(String path, Boolean checkHost)
at...

Game crash on start