diff --git a/csaxs_bec/bec_ipython_client/plugins/flomni/gui_tools.py b/csaxs_bec/bec_ipython_client/plugins/flomni/gui_tools.py
index ba93df9..653883f 100644
--- a/csaxs_bec/bec_ipython_client/plugins/flomni/gui_tools.py
+++ b/csaxs_bec/bec_ipython_client/plugins/flomni/gui_tools.py
@@ -18,10 +18,17 @@ class flomniGuiToolsError(Exception):
 
 
 class flomniGuiTools:
+    GUI_RPC_TIMEOUT = 20
 
     def __init__(self):
         self.text_box = None
         self.progressbar = None
+        self.flomni_window = None
+        self.xeyegui = None
+        self.pdf_viewer = None
+        self.idle_text_box = None
+        self.camera_gripper_image = None
+        self.camera_overview_image = None
 
     def set_client(self, client):
         self.client = client
@@ -29,9 +36,10 @@ class flomniGuiTools:
 
     def flomnigui_show_gui(self):
         if "flomni" in self.gui.windows:
+            self.flomni_window = self.gui.windows["flomni"]
             self.gui.flomni.raise_window()
         else:
-            self.gui.new("flomni")
+            self.flomni_window = self.gui.new("flomni", timeout=self.GUI_RPC_TIMEOUT)
             time.sleep(1)
 
     def flomnigui_stop_gui(self):
@@ -42,9 +50,11 @@ class flomniGuiTools:
 
     def flomnigui_show_xeyealign(self):
         self.flomnigui_show_gui()
-        if self._flomnigui_check_attribute_not_exists("xeyegui"):
+        if self._flomnigui_is_missing("xeyegui"):
             self.flomnigui_remove_all_docks()
-            self.xeyegui = self.gui.flomni.new("XRayEye", object_name="xrayeye")
+            self.xeyegui = self.gui.flomni.new(
+                "XRayEye", object_name="xrayeye", timeout=self.GUI_RPC_TIMEOUT
+            )
         # start live
         if not dev.cam_xeye.live_mode_enabled.get():
             dev.cam_xeye.live_mode_enabled.put(True)
@@ -52,9 +62,11 @@ class flomniGuiTools:
 
     def flomnigui_show_xeyealign_fittab(self):
         self.flomnigui_show_gui()
-        if self._flomnigui_check_attribute_not_exists("xeyegui"):
+        if self._flomnigui_is_missing("xeyegui"):
             self.flomnigui_remove_all_docks()
-            self.xeyegui = self.gui.flomni.new("XRayEye")
+            self.xeyegui = self.gui.flomni.new(
+                "XRayEye", object_name="xrayeye", timeout=self.GUI_RPC_TIMEOUT
+            )
         self.xeyegui.switch_tab("fit")
 
     def _flomnigui_check_attribute_not_exists(self, attribute_name):
@@ -70,31 +82,39 @@ class flomniGuiTools:
                     return False
         return True
 
+    def _flomnigui_is_missing(self, attribute_name):
+        widget = getattr(self, attribute_name, None)
+        if widget is None:
+            return True
+        if hasattr(widget, "_is_deleted") and widget._is_deleted():
+            return True
+        return False
+
     def flomnigui_show_cameras(self):
         self.flomnigui_show_gui()
         if self._flomnigui_check_attribute_not_exists(
             "cam_flomni_gripper"
         ) or self._flomnigui_check_attribute_not_exists("cam_flomni_overview"):
             self.flomnigui_remove_all_docks()
-            camera_gripper_image = self.gui.flomni.new("Image")
+            self.camera_gripper_image = self.gui.flomni.new("Image")
             if self._flomnicam_check_device_exists(dev.cam_flomni_gripper):
-                camera_gripper_image.image(device="cam_flomni_gripper", signal="preview")
-                camera_gripper_image.lock_aspect_ratio = True
-                camera_gripper_image.enable_fps_monitor = True
-                camera_gripper_image.enable_toolbar = False
-                camera_gripper_image.outer_axes = False
-                camera_gripper_image.inner_axes = False
+                self.camera_gripper_image.image(device="cam_flomni_gripper", signal="preview")
+                self.camera_gripper_image.lock_aspect_ratio = True
+                self.camera_gripper_image.enable_fps_monitor = True
+                self.camera_gripper_image.enable_toolbar = False
+                self.camera_gripper_image.outer_axes = False
+                self.camera_gripper_image.inner_axes = False
                 dev.cam_flomni_gripper.start_live_mode()
             else:
                 print("Cannot open camera_gripper. Device does not exist.")
-            camera_overview_image = self.gui.flomni.new("Image")
+            self.camera_overview_image = self.gui.flomni.new("Image")
             if self._flomnicam_check_device_exists(dev.cam_flomni_overview):
-                camera_overview_image.image(device="cam_flomni_overview", signal="preview")
-                camera_overview_image.lock_aspect_ratio = True
-                camera_overview_image.enable_fps_monitor = True
-                camera_overview_image.enable_toolbar = False
-                camera_overview_image.outer_axes = False
-                camera_overview_image.inner_axes = False
+                self.camera_overview_image.image(device="cam_flomni_overview", signal="preview")
+                self.camera_overview_image.lock_aspect_ratio = True
+                self.camera_overview_image.enable_fps_monitor = True
+                self.camera_overview_image.enable_toolbar = False
+                self.camera_overview_image.outer_axes = False
+                self.camera_overview_image.inner_axes = False
                 dev.cam_flomni_overview.start_live_mode()
             else:
                 print("Cannot open camera_overview. Device does not exist.")
@@ -104,15 +124,20 @@ class flomniGuiTools:
         # dev.cam_flomni_gripper.stop_live_mode()
         # dev.cam_xeye.live_mode = False
         if hasattr(self.gui, "flomni"):
-            self.gui.flomni.delete_all()
+            self.gui.flomni.delete_all(timeout=self.GUI_RPC_TIMEOUT)
         self.progressbar = None
         self.text_box = None
+        self.xeyegui = None
+        self.pdf_viewer = None
+        self.idle_text_box = None
+        self.camera_gripper_image = None
+        self.camera_overview_image = None
 
     def flomnigui_idle(self):
         self.flomnigui_show_gui()
-        if self._flomnigui_check_attribute_not_exists("idle_text_box"):
+        if self._flomnigui_is_missing("idle_text_box"):
             self.flomnigui_remove_all_docks()
-            idle_text_box = self.gui.flomni.new("TextBox")
+            self.idle_text_box = self.gui.flomni.new("TextBox")
         text = (
             "<pre>"
             + "██████╗ ███████╗ ██████╗     ███████╗██╗      ██████╗ ███╗   ███╗███╗   ██╗██╗\n"
@@ -123,7 +148,7 @@ class flomniGuiTools:
             + "╚═════╝ ╚══════╝ ╚═════╝     ╚═╝     ╚══════╝ ╚═════╝ ╚═╝     ╚═╝╚═╝  ╚═══╝╚═╝\n"
             + "</pre>"
         )
-        idle_text_box.set_html_text(text)
+        self.idle_text_box.set_html_text(text)
 
     def flomnigui_docs(self, filename: str | None = None):
         import csaxs_bec
@@ -167,7 +192,7 @@ class flomniGuiTools:
         # --- GUI handling (active existence check) ----------------------------
         self.flomnigui_show_gui()
 
-        if self._flomnigui_check_attribute_not_exists("PdfViewerWidget"):
+        if self._flomnigui_is_missing("pdf_viewer"):
             self.flomnigui_remove_all_docks()
             self.pdf_viewer = self.gui.flomni.new(widget="PdfViewerWidget")
 
@@ -185,7 +210,7 @@ class flomniGuiTools:
 
     def flomnigui_show_progress(self):
         self.flomnigui_show_gui()
-        if self._flomnigui_check_attribute_not_exists("progressbar"):
+        if self._flomnigui_is_missing("progressbar"):
             self.flomnigui_remove_all_docks()
             # Add a new dock with a RingProgressBar widget
             self.progressbar = self.gui.flomni.new("RingProgressBar")