hi Tim
thank you for your reply
it's a crash on plan G startup , I have not updated anything to my knowledge

Hello
thanks for your reply  I enclose  below my plan-G Log txt for your opinion and hopefully a solution
thanks in advance

18:44:00.2

---===+++===---

18:44:00.4 Starting Plan-G (XP edition), build 3.1.2.101
18:44:00.5 OS is Microsoft Windows NT 5.1.2600 Service Pack 3
18:44:06.2 InitDataFolder
18:44:06.2 Data Source = C:\Documents and Settings\bryan\My Documents\Plan-G Files\Data\PlanG3_FSX.sdf
18:44:06.2 Data Source = C:\Documents and Settings\bryan\My Documents\Plan-G Files\Data\PlanG3_FS9.sdf
18:44:06.2 Data Source = C:\Documents and Settings\bryan\My Documents\Plan-G Files\Data\PlanG3_XPX.sdf
18:44:06.2 Data Source = C:\Documents and Settings\bryan\My Documents\Plan-G Files\Data\PlanG3_P3D.sdf
18:44:06.2 Data Source = C:\Documents and Settings\bryan\My Documents\Plan-G Files\Data\PlanG3_NAVI.sdf
18:44:06.2 Data Source = C:\Documents and Settings\bryan\My Documents\Plan-G Files\Data\UserWaypoints.sdf
18:44:06.2 Data Source = C:\Documents and Settings\bryan\My Documents\Plan-G Files\Data\MEF.sdf
18:44:17.3 Map tiles cache: C:\Documents and Settings\bryan\Local Settings\Application Data\GMap.NET\
18:44:20.0 Program in: C:\Program Files\Plan-G v3.1.2-WinXP
18:44:20.0 Data in: C:\Documents and Settings\bryan\My Documents\Plan-G Files
18:44:20.1 IsDataLoaded: FSX
18:44:20.1 Data Source = C:\Documents and Settings\bryan\My Documents\Plan-G Files\Data\PlanG3_FSX.sdf
18:44:24.4 LoadRecentItems: System.IO.IOException: The process cannot access the file 'C:\Documents and Settings\bryan\Local Settings\Temp\wbhixv5m.dll' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
   at Microsoft.CSharp.CSharpCodeGenerator.FromFileBatch(CompilerParameters options, String[] fileNames)
   at Microsoft.CSharp.CSharpCodeGenerator.FromSourceBatch(CompilerParameters options, String[] sources)
   at Microsoft.CSharp.CSharpCodeGenerator.System.CodeDom.Compiler.ICodeCompiler.CompileAssemblyFromSourceBatch(CompilerParameters options, String[] sources)
   at System.CodeDom.Compiler.CodeDomProvider.CompileAssemblyFromSource(CompilerParameters options, String[] sources)
   at System.Xml.Serialization.Compiler.Compile(Assembly parent, String ns, XmlSerializerCompilerParameters xmlParameters, Evidence evidence)
   at System.Xml.Serialization.TempAssembly.GenerateAssembly(XmlMapping[] xmlMappings, Type[] types, String defaultNamespace, Evidence evidence, XmlSerializerCompilerParameters parameters, Assembly assembly, Hashtable assemblies)
   at System.Xml.Serialization.XmlSerializer.GenerateTempAssembly(XmlMapping xmlMapping, Type type, String defaultNamespace)
   at System.Xml.Serialization.XmlSerializer..ctor(Type type, String defaultNamespace)
   at Plan_G3.Model.MRU.LoadRecentItems()
18:44:24.8 LoadRecentItems: 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.ParseDocumentContent()
   at System.Xml.XmlTextReaderImpl.Read()
   at System.Xml.XmlTextReader.Read()
   at System.Xml.XmlReader.MoveToContent()
   at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderObservableCollection1.Read3_ArrayOfRecentFile()
   --- 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 Plan_G3.Model.MRU.LoadRecentItems()

Had this message on starting it this evening ,   Plan G has encountered a problem and needs to close ??  was working fine on my second pc  linked to fsx on a win 7 pc , no problems  now this ??
uninstalled , re installed no difference !! any advice please ??
thanks Bryan