System.IO.IOException: The process cannot access the file 'C:\Program Files (x86)\Electronic Arts\Ultima Online Classic\gumpartLegacyMUL.uop' 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, Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
   at Ultima.Data.Archive..ctor(String path)
   at PlayUO.Gumps.GumpFactory..ctor(Gumps gumps)
   at PlayUO.Gumps.ReadFromDisk(Int32 GumpID, IHue Hue)
   at PlayUO.Assets.StaticCacheGraphicProvider.GetGump(Int32 gumpId)
   at PlayUO.GumpImage..ctor(Int32 GumpID)
   at PlayUO.GBackground..ctor(Int32 BackID, Int32 Width, Int32 Height, Int32 X, Int32 Y, Boolean HasBorder)
   at PlayUO.Gumps.MessageBoxOk(String Prompt, Boolean Modal, OnClick ClickHandler)
   at PlayUO.Network.<Connect>b__0()
   at PlayUO.NetworkContext.HandleError(Exception ex)
   at PlayUO.NetworkContext.OnReceive(IAsyncResult asyncResult)
   at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Net.ContextAwareResult.Complete(IntPtr userToken)
   at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
   at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionPortCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
   at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)