diff --git a/.github/workflows/pr-coverage.yml b/.github/workflows/pr-coverage.yml
index 6c16610..9ac9e0d 100644
--- a/.github/workflows/pr-coverage.yml
+++ b/.github/workflows/pr-coverage.yml
@@ -41,8 +41,12 @@ jobs:
           poetry run coverage xml
         working-directory: ./python
 
-      - name: Get Cover 
-        uses: orgoro/coverage@v3.2
-        with:
-          coverageFile: python/coverage.xml
-          token: ${{ secrets.GITHUB_TOKEN }}
\ No newline at end of file
+# orgoro does not work in workflow runs due to fork permissions issues:
+# See PR https://github.com/orgoro/coverage/pull/281
+# So commenting it out for now.
+# 
+#      - name: Get Cover 
+#         uses: orgoro/coverage@v3.2
+#         with:
+#           coverageFile: python/coverage.xml
+#           token: ${{ secrets.GITHUB_TOKEN }}
\ No newline at end of file
diff --git a/python/ouroboros/pipeline/backproject_pipeline.py b/python/ouroboros/pipeline/backproject_pipeline.py
index 236387f..d1dcbb6 100644
--- a/python/ouroboros/pipeline/backproject_pipeline.py
+++ b/python/ouroboros/pipeline/backproject_pipeline.py
@@ -328,17 +328,14 @@ def _process(self, input_data: any) -> tuple[any, None] | tuple[None, any]:
             # Update the progress bar
             self.update_progress(0.5 + i / len(chunks_and_boxes) / 2)
 
-        # Close all the memmaps
-        for volume_memmap in volume_memmaps:
-            del volume_memmap
+        # Close all the memmaps - All 3 needed to allow deletion of temporary files.
+        del volume					# Delete volume view created during .tif file writing.
+        del intersection_volume		# Delete volume view created during .tif file writing.
+        del volume_memmaps[:] 		# Delete all the memmaps.
 
-        # Delete the temporary volume files
-        shutil.rmtree(
-            join_path(
-                config.output_file_folder,
-                format_backproject_tempvolumes(config.output_file_name),
-            )
-        )
+        # Delete the temporary volume files.
+        # Errors ignored because leaving a temporary file around is better than failing.  Could add logging.
+        shutil.rmtree(temp_folder_path, ignore_errors=True)
 
         self.add_timing("export", time.perf_counter() - start)
 
@@ -365,7 +362,7 @@ def _process(self, input_data: any) -> tuple[any, None] | tuple[None, any]:
                     delete_intermediate=False,
                     compression=config.backprojection_compression,
                     metadata=metadata,
-                    resolution=resolution, 	# XY Resolution
+                    resolution=resolution,     # XY Resolution
                     resolutionunit=resolutionunit,
                 )
             except BaseException as e: