Ensure conda prefix directories are not present before creating envir…

…onments

installers/conda/linux/create_tarball.sh

@@ -131,6 +131,8 @@ mkdir -p "$bundle_contents"
 
 # Create conda environment internally. --always-copy ensures no symlinks are used
 bundle_conda_prefix="$bundle_contents"
+# Make sure the directory doesn't exist before we create the conda environment otherwise it will fail
+rm -rf "$bundle_conda_prefix"
 
 echo "Creating Conda environment in '$bundle_conda_prefix'"
 "$CONDA_EXE" create --quiet --prefix "$bundle_conda_prefix" --always-copy \

installers/conda/osx/create_bundle.sh

@@ -194,13 +194,16 @@ elif [ -e "$BUILD_DIR" ]; then
 fi
 
 # Create basic directory structure.
-mkdir -p "$bundle_contents"/{Resources,MacOS}
+mkdir -p "$bundle_contents"/MacOS
 
 # Create conda environment internally.
 # --always-copy ensures no symlinks are used
 # --platform osx-64 is required to allow ARM-based systems to install the osx-64 mantid packages.
 bundle_conda_prefix="$bundle_contents"/Resources
 
+# Make sure the directory doesn't exist before we create the conda environment otherwise it will fail
+rm -rf "$bundle_conda_prefix"
+
 echo "Creating Conda environment in '$bundle_conda_prefix'"
 "$CONDA_EXE" create --quiet --prefix "$bundle_conda_prefix" --always-copy --platform osx-64 \
   --channel "$conda_channel" --channel conda-forge --yes \