Game crashes when loading a saved game from mission mode

[ObjectInSpace]

I can load saved games OK from the main menu but I cannot reload a saved game during flight. Here is the crash:

Error base exception: System.NullReferenceException: Object reference not set to an instance of an object.
at SharpDX.DirectSound.SoundBuffer.Play(Int32 reserved1, Int32 priority, PlayFlags flags)
at SharpDX.DirectSound.SoundBuffer.Play(Int32 priority, PlayFlags flags)
at BPCSharedComponent.ExtendedAudio.DSound.PlaySound(SecondarySoundBuffer Sound, Boolean bCloseFirst, Boolean bLoopSound) in C:\Users\munawar\projects\Three-D-Velocity\shared\BPCSharedComponent\DSound.cs:line 305
at TDV.Projector.playSound(SecondarySoundBuffer theSound, Boolean stopFlag, Boolean loopFlag) in C:\Users\munawar\projects\Three-D-Velocity\TDV\Projector.cs:line 527
at TDV.Aircraft.playWindSound() in C:\Users\munawar\projects\Three-D-Velocity\TDV\Aircraft.cs:line 3004
at TDV.Aircraft.move() in C:\Users\munawar\projects\Three-D-Velocity\TDV\Aircraft.cs:line 764
at TDV.Holder.activate() in C:\Users\munawar\projects\Three-D-Velocity\TDV\Holder.cs:line 112
Error Description: Object reference not set to an instance of an object.
Stack trace: at SharpDX.DirectSound.SoundBuffer.Play(Int32 reserved1, Int32 priority, PlayFlags flags)
at SharpDX.DirectSound.SoundBuffer.Play(Int32 priority, PlayFlags flags)
at BPCSharedComponent.ExtendedAudio.DSound.PlaySound(SecondarySoundBuffer Sound, Boolean bCloseFirst, Boolean bLoopSound) in C:\Users\munawar\projects\Three-D-Velocity\shared\BPCSharedComponent\DSound.cs:line 305
at TDV.Projector.playSound(SecondarySoundBuffer theSound, Boolean stopFlag, Boolean loopFlag) in C:\Users\munawar\projects\Three-D-Velocity\TDV\Projector.cs:line 527
at TDV.Aircraft.playWindSound() in C:\Users\munawar\projects\Three-D-Velocity\TDV\Aircraft.cs:line 3004
at TDV.Aircraft.move() in C:\Users\munawar\projects\Three-D-Velocity\TDV\Aircraft.cs:line 764
at TDV.Holder.activate() in C:\Users\munawar\projects\Three-D-Velocity\TDV\Holder.cs:line 112