diff --git a/CONTRIBUTIONS.md b/CONTRIBUTIONS.md
index ea2c6a4..aff3295 100644
--- a/CONTRIBUTIONS.md
+++ b/CONTRIBUTIONS.md
@@ -43,7 +43,7 @@ For those who have some python experience as well, you can:
 Many thanks to these additional authors:
 
 * Matthew Allred ("Kameone") for design of the v1.1 UI, MacOS installation instructions, and working on promotion and YouTube videos.
-* "bale-go" for development and continued work on the 'calibrated rank' AI.
+* "bale-go" for development and continued work on the 'calibrated rank' AI and rank estimation algorithm.
 * "Dontbtme" for detailed feedback and early testing of v1.0+.
 * "nowoowoo" for a fix to the parser for SGF files with extra line breaks.
 * "nimets123" for the timer sound effects.
diff --git a/katrain/core/engine.py b/katrain/core/engine.py
index 8bb58c1..5f82ade 100644
--- a/katrain/core/engine.py
+++ b/katrain/core/engine.py
@@ -109,6 +109,8 @@ class KataGoEngine:
                 died_msg = i18n._("Engine died unexpectedly").format(error=os_error)
                 self.katrain.log(died_msg, OUTPUT_ERROR)
                 self.katago_process = None
+            else:
+                died_msg = i18n._("Engine died unexpectedly").format(error=os_error)
             raise EngineDiedException(died_msg)
         return ok
 
@@ -118,8 +120,8 @@ class KataGoEngine:
             while self.queries and process.poll() is None:
                 time.sleep(0.1)
         if process:
-            process.terminate()
             self.katago_process = None
+            process.terminate()
         if self.stderr_thread:
             self.stderr_thread.join()
         if self.analysis_thread:
@@ -137,7 +139,7 @@ class KataGoEngine:
                         self.katrain.log(line.decode(errors="ignore").strip(), OUTPUT_KATAGO_STDERR)
                     except Exception as e:
                         print("ERROR in processing KataGo stderr:", line, "Exception", e)
-                else:
+                elif self.katago_process:
                     self.check_alive(exception_if_dead=True)
             except Exception as e:
                 self.katrain.log(f"Exception in reading stdout {e}", OUTPUT_DEBUG)
@@ -147,7 +149,7 @@ class KataGoEngine:
         while self.katago_process is not None:
             try:
                 line = self.katago_process.stdout.readline()
-                if not line:
+                if self.katago_process and not line:
                     self.check_alive(exception_if_dead=True)
             except OSError as e:
                 self.check_alive(os_error=str(e), exception_if_dead=True)
diff --git a/katrain/gui/widgets/graph.py b/katrain/gui/widgets/graph.py
index 9f9df67..8b79709 100644
--- a/katrain/gui/widgets/graph.py
+++ b/katrain/gui/widgets/graph.py
@@ -22,7 +22,6 @@ class Graph(Widget):
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
         self._lock = threading.Lock()
-        self.redraw_on_highlight_change = True
         self.bind(pos=self.update_graph, size=self.update_graph)
         self.redraw_trigger = Clock.create_trigger(self.update_graph, 0.1)
 
@@ -40,17 +39,13 @@ class Graph(Widget):
 
     def update_value(self, node):
         with self._lock:
-            changed = self.redraw_on_highlight_change and self.highlighted_index != node.depth
             self.highlighted_index = index = node.depth
             self.nodes.extend([None] * max(0, index - (len(self.nodes) - 1)))
-            if self.nodes[index] != node:
-                changed = True
             self.nodes[index] = node
             if index > 1 and node.parent:  # sometimes there are gaps
                 backfill, bfnode = index - 1, node.parent
                 while bfnode is not None and self.nodes[backfill] != bfnode:
                     self.nodes[backfill] = bfnode
-                    changed = True
                     backfill -= 1
                     bfnode = bfnode.parent
 
@@ -58,13 +53,11 @@ class Graph(Widget):
                 node is None or not node.children or self.nodes[index + 1] != node.ordered_children[0]
             ):
                 self.nodes = self.nodes[: index + 1]  # on branch switching, don't show history from other branch
-                changed = True
             if index == len(self.nodes) - 1:  # possibly just switched branch or the line above triggered
                 while node.children:  # add children back
                     node = node.ordered_children[0]
                     self.nodes.append(node)
-            if changed:
-                self.redraw_trigger()
+            self.redraw_trigger()
 
 
 class ScoreGraph(Graph):
@@ -185,7 +178,6 @@ class RankGraph(Graph):
 
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
-        self.redraw_on_highlight_change = False
         self.calculate_trigger = Clock.create_trigger(lambda *args: self.rank_game(), 0.25)
         self.rank_by_player = {}
 
diff --git a/katrain/popups.kv b/katrain/popups.kv
index 389d550..edd924a 100644
--- a/katrain/popups.kv
+++ b/katrain/popups.kv
@@ -502,6 +502,6 @@
     I18NFileBrowser:
         id: filesel
         multiselect: False
-        filters: ["*.sgf"]
+        filters: ["*.sgf","*.gib"]
         path: "."
         size_hint: 1,7