diff --git a/experiment/measurer/coverage_utils.py b/experiment/measurer/coverage_utils.py
index 42ca57385..27ab69965 100644
--- a/experiment/measurer/coverage_utils.py
+++ b/experiment/measurer/coverage_utils.py
@@ -276,6 +276,8 @@ def generate_json_summary(coverage_binary,
 
     if summary_only:
         command.append('-summary-only')
+    # Ensure the directory exists, creating it if necessary
+    os.makedirs(os.path.dirname(output_file), exist_ok=True)
 
     with open(output_file, 'w', encoding='utf-8') as dst_file:
         result = new_process.execute(command,
diff --git a/experiment/runner.py b/experiment/runner.py
index b955ff665..b8c95fcca 100644
--- a/experiment/runner.py
+++ b/experiment/runner.py
@@ -95,6 +95,8 @@ def _clean_seed_corpus(seed_corpus_dir):
 def get_clusterfuzz_seed_corpus_path(fuzz_target_path):
     """Returns the path of the clusterfuzz seed corpus archive if one exists.
     Otherwise returns None."""
+    if not fuzz_target_path:
+        return None
     fuzz_target_without_extension = os.path.splitext(fuzz_target_path)[0]
     seed_corpus_path = (fuzz_target_without_extension +
                         SEED_CORPUS_ARCHIVE_SUFFIX)