diff --git a/junifer/api/cli.py b/junifer/api/cli.py
index 0f25d5ecd..2de9096b6 100644
--- a/junifer/api/cli.py
+++ b/junifer/api/cli.py
@@ -13,7 +13,12 @@ from typing import Dict, List, Union
 import click
 import yaml
 
-from ..utils.logging import configure_logging, logger, warn_with_log
+from ..utils.logging import (
+    configure_logging,
+    logger,
+    warn_with_log,
+    raise_error,
+)
 from .functions import collect as api_collect
 from .functions import queue as api_queue
 from .functions import run as api_run
@@ -60,6 +65,11 @@ def _parse_elements(element: str, config: Dict) -> Union[List, None]:
         )
     elif elements is None:
         elements = config.get("elements", None)
+        if elements is None:
+            raise_error(
+                "The 'elements' key is set in the configuration, but its value"
+                " is 'None'. It is likely that there is an empty 'elements' "
+                "section in the yaml configuration file.")
     return elements
 
 
@@ -188,6 +198,8 @@ def queue(
     # TODO: add validation
     config = parse_yaml(filepath)  # type: ignore
     elements = _parse_elements(element, config)
+    if "queue" not in config:
+        raise_error(f"No queue configuration found in {filepath}.")
     queue_config = config.pop("queue")
     kind = queue_config.pop("kind")
     api_queue(
diff --git a/junifer/api/functions.py b/junifer/api/functions.py
index 5dcb9230b..90ea8f839 100644
--- a/junifer/api/functions.py
+++ b/junifer/api/functions.py
@@ -11,6 +11,7 @@ import typing
 from pathlib import Path
 from typing import Dict, List, Optional, Tuple, Union
 
+import textwrap
 import yaml
 
 from ..datagrabber.base import BaseDataGrabber
@@ -200,6 +201,22 @@ def queue(
             shutil.rmtree(jobdir)
     jobdir.mkdir(exist_ok=True, parents=True)
 
+    if "with" in config:
+        to_load = config["with"]
+        # If there is a list of files to load, copy and remove the path
+        # component
+        fixed_load = []
+        if not isinstance(to_load, list):
+            to_load = [to_load]
+        for item in to_load:
+            if item.endswith(".py"):
+                logger.debug(f"Copying {item} to jobdir ({jobdir.absolute()})")
+                shutil.copy(item, jobdir)
+                fixed_load.append(Path(item).name)
+            else:
+                fixed_load.append(item)
+        config["with"] = fixed_load
+
     yaml_config = jobdir / "config.yaml"
     logger.info(f"Writing YAML config to {str(yaml_config.absolute())}")
     with open(yaml_config, "w") as f:
@@ -228,6 +245,7 @@ def queue(
             jobdir=jobdir,
             yaml_config=yaml_config,
             elements=elements,  # type: ignore
+            config=config,
             **kwargs,
         )
     elif kind == "SLURM":
@@ -236,6 +254,7 @@ def queue(
             jobdir=jobdir,
             yaml_config=yaml_config,
             elements=elements,  # type: ignore
+            config=config,
             **kwargs,
         )
     else:
@@ -249,6 +268,7 @@ def _queue_condor(
     jobdir: Path,
     yaml_config: Path,
     elements: List[Union[str, Tuple]],
+    config: Dict,
     env: Optional[Dict[str, str]] = None,
     mem: str = "8G",
     cpus: int = 1,
@@ -270,6 +290,8 @@ def _queue_condor(
         The path to the YAML config file.
     elements : list of str or tuple
         Element(s) to process. Will be used to index the datagrabber.
+    config : dict
+        The configuration to be used for queueing the job.
     env : dict, optional
         The environment variables passed as dictionary (default None).
     mem : str, optional
@@ -311,8 +333,8 @@ def _queue_condor(
         env_name = env["name"]
         executable = "run_conda.sh"
         arguments = f"{env_name} junifer"
-        # TODO: Copy run_conda.sh to jobdir
         exec_path = jobdir / executable
+        logger.info(f"Copying {executable} to {str(exec_path.absolute())}")
         shutil.copy(Path(__file__).parent / "res" / executable, exec_path)
         make_executable(exec_path)
     elif env["kind"] == "venv":
@@ -351,9 +373,9 @@ def _queue_condor(
         {extra_preamble}
 
         # Logs
-        log = {str(log_dir.absolute())}/junifer_run_$(element).log
-        output = {str(log_dir.absolute())}/junifer_run_$(element).out
-        error = {str(log_dir.absolute())}/junifer_run_$(element).err
+        log = {str(log_dir.absolute())}/junifer_run_$(log_element).log
+        output = {str(log_dir.absolute())}/junifer_run_$(log_element).out
+        error = {str(log_dir.absolute())}/junifer_run_$(log_element).err
         """
 
     submit_run_fname = jobdir / f"run_{jobname}.submit"
@@ -362,7 +384,7 @@ def _queue_condor(
 
     # Write to run submit files
     with open(submit_run_fname, "w") as submit_file:
-        submit_file.write(run_preamble)
+        submit_file.write(textwrap.dedent(run_preamble))
         submit_file.write("queue\n")
 
     collect_preamble = f"""
@@ -392,16 +414,22 @@ def _queue_condor(
 
     # Now create the collect submit file
     with open(submit_collect_fname, "w") as submit_file:
-        submit_file.write(collect_preamble)  # Eval preamble here
+        submit_file.write(textwrap.dedent(collect_preamble))
         submit_file.write("queue\n")
 
     with open(dag_fname, "w") as dag_file:
         # Get all subject and session names from file list
         for i_job, t_elem in enumerate(elements):
-            str_elem = (','.join(t_elem) if isinstance(t_elem, tuple)
-                        else t_elem)
+            str_elem = (
+                ",".join(t_elem) if isinstance(t_elem, tuple) else t_elem
+            )
+            log_elem = (
+                "_".join(t_elem) if isinstance(t_elem, tuple) else t_elem
+            )
             dag_file.write(f"JOB run{i_job} {submit_run_fname}\n")
-            dag_file.write(f'VARS run{i_job} element="{str_elem}"\n\n')
+            dag_file.write(
+                f'VARS run{i_job} element="{str_elem} '
+                f'log_element="{log_elem}"\n\n')
         if collect is True:
             dag_file.write(f"JOB collect {submit_collect_fname}\n")
             dag_file.write("PARENT ")
@@ -426,6 +454,7 @@ def _queue_slurm(
     jobdir: Path,
     yaml_config: Path,
     elements: List[Union[str, Tuple]],
+    config: Dict
 ) -> None:
     """Submit job to SLURM.
 
@@ -440,7 +469,8 @@ def _queue_slurm(
     elements : str or tuple or list[str or tuple], optional
         Element(s) to process. Will be used to index the datagrabber
         (default None).
-
+    config : dict
+        The configuration to be used for queueing the job.
     """
     pass
     # logger.debug("Creating SLURM job")
diff --git a/junifer/api/parser.py b/junifer/api/parser.py
index 470f39bed..fabdd1647 100644
--- a/junifer/api/parser.py
+++ b/junifer/api/parser.py
@@ -7,6 +7,9 @@
 import importlib
 from pathlib import Path
 from typing import Dict, Union
+import importlib.util
+import os
+import sys
 
 import yaml
 
@@ -38,14 +41,31 @@ def parse_yaml(filepath: Union[str, Path]) -> Dict:
     # Filepath reading
     with open(filepath, "r") as f:
         contents = yaml.safe_load(f)
-    # Autload modules
+    if "elements" in contents:
+        if contents["elements"] is None:
+            raise_error(
+                "The elements key was defined but its content is empty. "
+                "Please define the elements to operate on or remove the key.")
+    # load modules
     if "with" in contents:
         to_load = contents["with"]
-        # Convert autload modules to list
+        # Convert load modules to list
         if not isinstance(to_load, list):
             to_load = [to_load]
         for t_module in to_load:
-            logger.info(f"Importing module: {t_module}")
-            importlib.import_module(t_module)
+            if t_module.endswith(".py"):
+                logger.debug(f"Importing file: {t_module}")
+                file_path = Path(os.getcwd()) / t_module
+                if not file_path.exists():
+                    raise_error(
+                        f"File in 'with' section does not exist: {file_path}")
+                spec = importlib.util.spec_from_file_location(
+                    t_module, file_path)
+                module = importlib.util.module_from_spec(spec)  # type: ignore
+                sys.modules[t_module] = module
+                spec.loader.exec_module(module)  # type: ignore
+            else:
+                logger.info(f"Importing module: {t_module}")
+                importlib.import_module(t_module)
 
     return contents