diff --git a/oephys2nix/stimulus_recreation.py b/oephys2nix/stimulus_recreation.py
index bcd97cf..4f88643 100644
--- a/oephys2nix/stimulus_recreation.py
+++ b/oephys2nix/stimulus_recreation.py
@@ -438,10 +438,19 @@ class StimulusToNix:
                     continue
 
                 last_repro_name = self.dataset.repro_runs()[i - 1].name
-                last_repro_position = (
-                    self.block.groups[last_repro_name].tags[0].position[0]
-                    + self.block.groups[last_repro_name].tags[0].extent[0]
-                )
+                try:
+                    log.debug("Did find the last repro")
+                    last_repro_position = (
+                        self.block.groups[last_repro_name].tags[0].position[0]
+                        + self.block.groups[last_repro_name].tags[0].extent[0]
+                    )
+                except KeyError:
+                    log.debug("Last repro did not exit")
+                    log.info("Finish writing")
+                    break
+                    embed()
+                    exit()
+
                 self._append_tag(
                     repro,
                     last_repro_position.reshape(-1, 1),