Xojo 2019r2 continues to have rather odd side effects. Why do I get a NOE in the below code:

dim theProcesses as processMBS

if theBundleID = "" then Return false

theProcesses = new processMBS
theProcesses.getfirstProcess
if theProcesses.BundleID = theBundleID then
 return true
end if

dim Timeout as Integer = System.Ticks + 60 * 30
while theProcesses.getNextProcess and System.Ticks < Timeout  '<--NOE here
  if theProcesses.BundleID = theBundleID then
    return true
  end if
wend

The code itself works fine when I execute it in a simple project. I have used the code for ages without problems. For instance, before I do an AppleScript I make sure that the app is running.

I only get the NOE when I try to check for Filemaker. And I get the NOE for different locations where the function is called.

I tried the code below and don't get an exception!?

Dim theProcesses As processMBS

Dim theBundleID As String = "com.filemaker.client.pro12"
'If theBundleID = "" Then Return False

theProcesses = New processMBS
theProcesses.getfirstProcess
If theProcesses.BundleID = theBundleID Then
  Break
End If

Dim Timeout As Integer = System.Ticks + 60 * 30
While theProcesses.getNextProcess And System.Ticks < Timeout 
  If theProcesses.BundleID = theBundleID Then
    Break
    'Return True
  End If
Wend

Break

Does the exception have a message text or stack trace?
It looks different when the plugin raises it compared to Xojo runtime itself.

Changed channel and title because the NOE when getting a process is just a symptom.

I instantiate a server socket singleton for talking with Filemaker. If I take that out then the NOEs are gone.

Private Function AddSocket(socket as ServerSocket) as TCPSocket
  
  'add some sockets
  
  Dim ret As TCPSocket = New FilemakerClientSocket(mCurrentSocket)
  System.Debuglog "Added Socket " + mCurrentSocket.totext+ " at "+socket.LocalAddress.totext
  mCurrentSocket = mCurrentSocket + 1
  Return ret
  
  exception exc
    theException = new ErrorException(exc, currentMethodName)
End Function


Public Sub Constructor()
  
  'prepare the socket
  
  if MainServerSocket = Nil then
    MainServerSocket = New ServerSocket
    MainServerSocket.Port = mSocketPort
    AddHandler MainServerSocket.SocketRequested, AddressOf AddSocket
    MainServerSocket.Listen
  end if
  
  exception exc
    theException = new ErrorException(exc, currentMethodName)
    
End Sub

Am I doing something stupid here? The main intent is that Filemaker should talk to my app with "127.0.0.1:23456?A" & Attachment::MailID"

Again can you show message, errorcode and stack trace for the exception you see?

No message text or error code. My general exception handler which should fish out the stack trace doesn't show anything useful:

2019-11-29, 09:46:58 unhandled exception!!!
2019-11-29, 09:46:58 Buffer:
2019-11-29, 09:46:58 --------------------------
2019-11-29, 09:46:58 An error happened:
2019-11-29, 09:46:58 Window/Class:
2019-11-29, 09:46:58 Method/Event:
2019-11-29, 09:46:58 Error Message: A really unexpected error occurred!
2019-11-29, 09:46:58 Time: Freitag, 29. November 2019 09:46:58 Mitteleuropäische Normalzeit 108768094
2019-11-29, 09:46:58 Type of Error: NilObjectException
2019-11-29, 09:46:58 --------------------------
2019-11-29, 09:46:58 Stack:
2019-11-29, 09:46:58
Sub Delegate.Invoke()
Sub Application._CallFunctionWithExceptionHandling()
2019-11-29, 09:46:58 Stack done
2019-11-29, 09:46:58 ErrorReportWindow.Constructor
2019-11-29, 09:47:11 ---------------------------------------

Delegate.Invoke is causing it, so I bet the target of a weakAddressOf is gone.

@Beatrix W Xojo 2019r2 continues to have rather odd side effects. .

First off do yourself a favour & use 2.1 since it had one VERY significant change from R2 + a bunch of other fixes