diff --git a/README.md b/README.md
index 9eaee1f..e40318b 100644
--- a/README.md
+++ b/README.md
@@ -27,3 +27,22 @@ that indicate how well a particular entry is performing in relation with the res
 Results are stored under /home/bioinfo/services/emv/data/emdbs/emd-*****
 The JSON files emd-<EMDB_ID>_<PDB_ID>_emv_<method>.json files are automatically and regularl retrieved from Campins (also from Rinchen-dos for dev/testing purposes). This allow to populate the corresponding WebServices (BWS) that will allow to show the _Validation and Quality_ tracks in 3DBionotes.
 
+## Notes
+
+### Chimera
+
+For some PDBs, we got an error on the calculation of Q-score. The problem is at `~/.local/UCSF-Chimera64-1.14/share/mapq/qscores.py`, line 1786:
+
+```
+if at.isBB :
+```
+
+Some entries do not have this property, so we need to check the property existence first:
+
+```
+if hasattr(at, 'isBB') and at.isBB:
+```
+
+Note: This folder `mapq` is not part of the UCSF Chimera core, but an external plugin (mapq):
+
+https://github.com/gregdp/mapq/blob/v1.6/mapq_chimera/qscores.py#L1905
diff --git a/tools/calc_updates_batch.py b/tools/calc_updates_batch.py
index 144d110..fd67095 100644
--- a/tools/calc_updates_batch.py
+++ b/tools/calc_updates_batch.py
@@ -70,9 +70,11 @@ def get_queue_cmmd_dependant(map_id, pdb_id, parent_job_id, method, script_name)
     """
     get queue command dependant
     """
+    # Use --kill-on-invalid-dep so the job is cancelled when its parent INIT job fails.
     cmmd = f"sbatch \
         --job-name={METHOD_INITIALS[method]}-{map_id} \
         --dependency=afterok:{parent_job_id} \
+        --kill-on-invalid-dep=yes \
         --output=/home/bioinfo/services/emv/logs/%j_%x.out \
         --error=/home/bioinfo/services/emv/logs/%j_%x.err \
         {os.path.join(TOOLS_PATH, script_name)} {map_id} {pdb_id}"
diff --git a/tools/script_emv_setup.py b/tools/script_emv_setup.py
index b48d7ef..62c0a3a 100644
--- a/tools/script_emv_setup.py
+++ b/tools/script_emv_setup.py
@@ -12,9 +12,9 @@
 import requests
 
 
-EMDB_EBI_REPOSITORY = "https://ftp.ebi.ac.uk/pub/databases/emdb/structures/"
-EMDB_WWPDB_REPOSITORY = "https://ftp.wwpdb.org/pub/emdb/structures/"
-EMDB_RCSB_REPOSITORY = "https://ftp.rcsb.org/pub/emdb/structures/"
+EMDB_EBI_REPOSITORY = "http://ftp.ebi.ac.uk/pub/databases/emdb/structures/"
+EMDB_WWPDB_REPOSITORY = "https://ftp.wwpdb.org/pub/emdb/structures/" # not used
+EMDB_RCSB_REPOSITORY = "https://ftp.rcsb.org/pub/emdb/structures/" # not used
 EMDB_EBI_JSON_REPOSITORY = "https://www.ebi.ac.uk/emdb/api/entry/"
 EMDB_FTP_SERVER = "ftp.ebi.ac.uk"
 EMDB_FTP_DIR = "pub/databases/emdb/structures/%s/other"
diff --git a/tools/script_execute_mapq.py b/tools/script_execute_mapq.py
index 113f4f0..a53d17d 100755
--- a/tools/script_execute_mapq.py
+++ b/tools/script_execute_mapq.py
@@ -18,16 +18,20 @@
 
 def execute_mapq(map_filename, pdb, dir_path):
     """compute MapQ"""
+    mapq_path = os.path.join(dir_path, map_filename)
+    pdb_path = os.path.join(dir_path, pdb)
     os_command = f"python3 {TOOLS_PATH}mapq_chimera/mapq_cmd.py \
-        /home/bioinfo/.local/UCSF-Chimera64-1.14/ {dir_path}/{map_filename} {dir_path}/{pdb} np=8"
+        /home/bioinfo/.local/UCSF-Chimera64-1.14/ {mapq_path} {pdb_path} np=8"
     print("--> Map-Q command:", os_command)
     os.system(os_command)
 
 
 def convert_mapq_to_aapdb(mapq, aa_pdb, dir_path):
     """Save to aa.PDB file"""
+    mapq_path = os.path.join(dir_path, mapq)
+    pdb_path = os.path.join(dir_path, aa_pdb)
     os_command = f"python3 {TOOLS_PATH}convert_mapQvol_to_pdb.py \
-        {dir_path}/{mapq} {dir_path}/{aa_pdb}"
+        {mapq_path} {pdb_path}"
     os.system(os_command)