Binary stream '0' does not contain a valid BinaryHeader

[hopewise]

I've installed 5.2, I can't start it, I keep get this error:

Binary stream '0' does not contain a valid BinaryHeader. Possible causes are invalid stream or object version change between serialization and deserialization.

at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run()
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at PluginCore.Utilities.ObjectSerializer.InternalDeserialize(String file, Type type)
at PluginCore.Utilities.ObjectSerializer.Deserialize(String file, Object obj, Boolean checkValidity)

[markknol]

Reports on the actual editor should be in the FlashDevelop Github, this repository is only for the website, sorry! https://github.com/fdorg/flashdevelop/issues