diff --git a/sed/loader/mpes/loader.py b/sed/loader/mpes/loader.py
index 20d8e2d1..61270c8a 100644
--- a/sed/loader/mpes/loader.py
+++ b/sed/loader/mpes/loader.py
@@ -927,13 +927,18 @@ def get_count_rate(
         count_rate_list = []
         accumulated_time = 0
         for fid in fids:
-            count_rate_, secs_ = get_count_rate(
-                h5py.File(self.files[fid]),
-                ms_markers_group=ms_markers_group,
-            )
-            secs_list.append((accumulated_time + secs_).T)
-            count_rate_list.append(count_rate_.T)
-            accumulated_time += secs_[-1]
+            try:
+                count_rate_, secs_ = get_count_rate(
+                    h5py.File(self.files[fid]),
+                    ms_markers_group=ms_markers_group,
+                )
+                secs_list.append((accumulated_time + secs_).T)
+                count_rate_list.append(count_rate_.T)
+                accumulated_time += secs_[-1]
+            except OSError as exc:
+                if "Unable to synchronously open file" in str(exc):
+                    print(f"Unable to open file {fid}: {str(exc)}")
+                    pass
 
         count_rate = np.concatenate(count_rate_list)
         secs = np.concatenate(secs_list)
@@ -967,10 +972,15 @@ def get_elapsed_time(self, fids: Sequence[int] = None, **kwds) -> float:
 
         secs = 0.0
         for fid in fids:
-            secs += get_elapsed_time(
-                h5py.File(self.files[fid]),
-                ms_markers_group=ms_markers_group,
-            )
+            try:
+                secs += get_elapsed_time(
+                    h5py.File(self.files[fid]),
+                    ms_markers_group=ms_markers_group,
+                )
+            except OSError as exc:
+                if "Unable to synchronously open file" in str(exc):
+                    print(f"Unable to open file {fid}: {str(exc)}")
+                    pass
 
         return secs