From cc1b40342572ab2e56399eb0d31f283d1a464335 Mon Sep 17 00:00:00 2001
From: David Hale <astronomerdave@gmail.com>
Date: Fri, 31 Jul 2026 13:13:36 -0700
Subject: [PATCH] fix bug in Physik_Instrumente::Interface::move_to_default

error was un-initialized
---
 PI/pi.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/PI/pi.cpp b/PI/pi.cpp
index c892ba66..491dae66 100644
--- a/PI/pi.cpp
+++ b/PI/pi.cpp
@@ -764,6 +764,8 @@ namespace Physik_Instrumente {
   template <typename ControllerType>
   long Interface<ControllerType>::move_to_default() {
 
+    this->thread_error.store( NO_ERROR );  // initialize the thread_error state.
+
     for ( const auto &mot : this->motormap ) {
       for ( const auto &axis : mot.second.axes ) {
         if ( !std::isnan(axis.second.defpos) ) {