io.streamwriter Can't write to text file after async task - vb.net

Question

I'm running the following code in an asynchronus sub and it's failing on "Test 2" write to a text file. I've tried writing asynchronously and synchronously and it fails when trying to write after the line BoxFldr = Await BoxFldrMgr.GetInformationAsync(id). This code is in a recursive sub and the streamwriter open/close is done in the sub calling this. Any ideas?
BoxFldrMgr = BoxClient.FoldersManager
BoxFileMgr = BoxClient.FilesManager
Debug.Print("Test write 1")
Await objWriter.WriteLineAsync("Test 1")
Debug.Print("getting folder details")
BoxFldr = Await BoxFldrMgr.GetInformationAsync(id)
Debug.Print("Test write 2")
Await objWriter.WriteLineAsync("Test 2")
It's failing with this error:
A first chance exception of type 'System.ObjectDisposedException' occurred in mscorlib.dll
A first chance exception of type 'System.ObjectDisposedException' occurred in mscorlib.dll
A first chance exception of type 'System.ObjectDisposedException' occurred in mscorlib.dll
A first chance exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll
An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll
Additional information: Exception has been thrown by the target of an invocation.