diff --git a/ec3 b/ec3
index dbf9be8..cf7820e 100755
--- a/ec3
+++ b/ec3
@@ -380,7 +380,7 @@ class Display:
     @staticmethod
     def display(msg):
         Display.clean()
-        sys.stdout.write(str(msg) + "\n")
+        sys.stdout.write("%s\n" % msg)
         sys.stdout.flush()
 
 class ClusterStore:
@@ -719,7 +719,7 @@ class CmdLaunch:
             for elem in resp.json()["uri-list"]:
                 vm_ids.append(os.path.basename(list(elem.values())[0]))
         except Exception as e:
-            CLI.display("Error launching front-end: %s" % str(e), level=logging.ERROR)
+            CLI.display("Error launching front-end: %s" % e.message, level=logging.ERROR)
             sys.exit(1)
         CLI.display("Infrastructure successfully created with ID: %s" % infrId, alt=infrId)
 
diff --git a/templates/pypka.radl b/templates/pypka.radl
new file mode 100644
index 0000000..8b8eeef
--- /dev/null
+++ b/templates/pypka.radl
@@ -0,0 +1,79 @@
+description pypka (
+    kind = 'component' and
+    short = 'PypKa Server.' and
+    content = 'Flexible Poisson-Boltzmann based pKa calculations with proton tautomerism.
+
+Webpage: https://pypka.org/'
+)
+
+configure front (
+@begin
+---
+  - ec3_prio: -10
+    tasks:
+
+    - name: Add psql repo key
+      apt_key:
+        url: "https://www.postgresql.org/media/keys/ACCC4CF8.asc"
+        state: present
+
+    - name: Add psql repo
+      apt_repository:
+        repo: 'deb http://apt.postgresql.org/pub/repos/apt/ {{ansible_distribution_release}}-pgdg main'
+        state: present
+        update_cache: yes
+
+    - name: install apt requisites
+      apt: 
+        pkg:
+          - libgfortran4
+          - gawk
+          - python3-pip
+          - autossh
+          - postgresql
+          - python2
+
+    - name: Install pypka
+      pip:
+        name:
+        - sqlalchemy
+        - psycopg2-binary
+        - pypka
+@end
+)
+
+configure wn (
+@begin
+---
+  - ec3_prio: -10
+    tasks:
+
+    - name: Add psql repo key
+      apt_key:
+        url: "https://www.postgresql.org/media/keys/ACCC4CF8.asc"
+        state: present
+
+    - name: Add psql repo
+      apt_repository:
+        repo: 'deb http://apt.postgresql.org/pub/repos/apt/ {{ansible_distribution_release}}-pgdg main'
+        state: present
+        update_cache: yes
+
+    - name: install apt requisites
+      apt: 
+        pkg:
+          - libgfortran4
+          - gawk
+          - python3-pip
+          - autossh
+          - postgresql-client
+          - python2
+
+    - name: Install pypka
+      pip:
+        name:
+        - sqlalchemy
+        - psycopg2-binary
+        - pypka
+@end
+)