RDM lost session entries after system blue screen

Do you get an error wen you open RDM?

no, zero errors, just lost the license key, so info about trial 30 days, and "surprise" = zero sessions :/

some log:

[2013-11-13 20:16:43]ERROR SILENT Devolutions.RemoteDesktopManager.Business.DataSources.XmlDeserializationException: There is an error in XML document (0, 0). ---> System.InvalidOperationException: There is an error in XML document (0, 0). ---> System.Xml.XmlException: Root element is missing.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res)
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlTextReaderImpl.Read()
at System.Xml.XmlTextReader.Read()
at System.Xml.XmlReader.MoveToContent()
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read706_Option()
--- End of inner exception stack trace ---
at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
at System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream)
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromString(String str, Type type, Boolean createAnInstanceIfNotExists, String nameSpace)
--- End of inner exception stack trace ---
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromString(String str, Type type, Boolean createAnInstanceIfNotExists, String nameSpace)
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromFile(String fileName, Type type, Boolean createAnInstanceIfNotExists)
at Devolutions.RemoteDesktopManager.Managers.OptionManager.DoLoadOption()
[2013-11-13 20:16:43]ERROR SILENT Devolutions.RemoteDesktopManager.Business.DataSources.XmlDeserializationException: There is an error in XML document (0, 0). ---> System.InvalidOperationException: There is an error in XML document (0, 0). ---> System.Xml.XmlException: Root element is missing.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res)
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlTextReaderImpl.Read()
at System.Xml.XmlTextReader.Read()
at System.Xml.XmlReader.MoveToContent()
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read706_Option()
--- End of inner exception stack trace ---
at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
at System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream)
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromString(String str, Type type, Boolean createAnInstanceIfNotExists, String nameSpace)
--- End of inner exception stack trace ---
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromString(String str, Type type, Boolean createAnInstanceIfNotExists, String nameSpace)
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromFile(String fileName, Type type, Boolean createAnInstanceIfNotExists)
at Devolutions.RemoteDesktopManager.Managers.OptionManager.LoadBackupOption()
[2013-11-13 20:16:43]ERROR SILENT Devolutions.RemoteDesktopManager.Business.DataSources.XmlDeserializationException: There is an error in XML document (0, 0). ---> System.InvalidOperationException: There is an error in XML document (0, 0). ---> System.Xml.XmlException: Root element is missing.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res)
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlTextReaderImpl.Read()
at System.Xml.XmlTextReader.Read()
at System.Xml.XmlReader.MoveToContent()
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read704_OptionExtension()
--- End of inner exception stack trace ---
at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
at System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream)
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromString(String str, Type type, Boolean createAnInstanceIfNotExists, String nameSpace)
--- End of inner exception stack trace ---
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromString(String str, Type type, Boolean createAnInstanceIfNotExists, String nameSpace)
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromFile(String fileName, Type type, Boolean createAnInstanceIfNotExists)
at Devolutions.RemoteDesktopManager.Managers.OptionManager.DoLoadOptionExtension()
[2013-11-13 20:16:43]ERROR SILENT Devolutions.RemoteDesktopManager.Business.DataSources.XmlDeserializationException: There is an error in XML document (0, 0). ---> System.InvalidOperationException: There is an error in XML document (0, 0). ---> System.Xml.XmlException: Root element is missing.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res)
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlTextReaderImpl.Read()
at System.Xml.XmlTextReader.Read()
at System.Xml.XmlReader.MoveToContent()
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read704_OptionExtension()
--- End of inner exception stack trace ---
at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
at System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream)
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromString(String str, Type type, Boolean createAnInstanceIfNotExists, String nameSpace)
--- End of inner exception stack trace ---
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromString(String str, Type type, Boolean createAnInstanceIfNotExists, String nameSpace)
at Devolutions.RemoteDesktopManager.Managers.SerializationManager.LoadObjectFromFile(String fileName, Type type, Boolean createAnInstanceIfNotExists)
at Devolutions.RemoteDesktopManager.Managers.OptionManager.LoadBackupOptionExtension()
[2013-11-13 20:16:43]ERROR SILENT System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
at System.Reflection.Module._GetTypesInternal(StackCrawlMark& stackMark)
at System.Reflection.Assembly.GetTypes()
at Devolutions.RemoteDesktopManager.Managers.AddOnManager.Load()
[2013-11-13 20:16:47]INFO Upgrading database for data source 'Local Data Source' with version 0
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[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 95
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 96
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 97
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 98
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 99
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 100
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 101
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 102
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 103
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[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 105
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 106
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 107
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 108
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 109
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 110
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 111
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 112
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 113
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 114
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 115
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 116
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 117
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 118
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 119
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 120
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 121
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 122
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 123
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 124
[2013-11-13 20:16:49]INFO Upgrading database for data source 'Local Data Source' with version 125
[2013-11-13 20:16:49]ERROR SILENT System.Xml.XmlException: Root element is missing.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res)
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlTextReaderImpl.Read()
at System.Xml.XmlTextReader.Read()
at DevExpress.Utils.Serializing.XmlXtraSerializer.DeserializeCore(Stream stream, String appName, IList objects)
at DevExpress.Utils.Serializing.XmlXtraSerializer.Deserialize(String path, String appName, IList objects)
at DevExpress.Utils.Serializing.XtraSerializer.DeserializeObject(Object obj, String path, String appName, OptionsLayoutBase options)
at DevExpress.Utils.Serializing.XtraSerializer.DeserializeObject(Object obj, String path, String appName)
at DevExpress.XtraBars.Docking.DockManager.RestoreLayoutCore(XtraSerializer serializer, Object path)
at DevExpress.XtraBars.Docking.DockManager.RestoreLayoutFromXml(String xmlFile)
at DevExpress.XtraBars.Docking.DockManager.RestoreFromXml(String xmlFile)
at Devolutions.RemoteDesktopManager.Managers.LayoutManager.LoadLayout(DockManager dockManager)
[2013-11-13 21:28:40]ERROR SILENT System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
at System.Reflection.Module._GetTypesInternal(StackCrawlMark& stackMark)
at System.Reflection.Assembly.GetTypes()
at Devolutions.RemoteDesktopManager.Managers.AddOnManager.Load()
[2013-11-13 21:39:15]ERROR SILENT System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
at System.Reflection.Module._GetTypesInternal(StackCrawlMark& stackMark)
at System.Reflection.Assembly.GetTypes()
at Devolutions.RemoteDesktopManager.Managers.AddOnManager.Load()
[2013-11-13 21:45:43]ERROR SILENT System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
at System.Reflection.Module._GetTypesInternal(StackCrawlMark& stackMark)
at System.Reflection.Assembly.GetTypes()
at Devolutions.RemoteDesktopManager.Managers.AddOnManager.Load()

Could you open this file and check the content to see if there is something inside?