diff --git a/setup.py b/setup.py
index 39173e0..b13453a 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
         'PyYAML     >= 3.11',
         'pycrypto   >= 2.6.1',
         'xmlsec     >= 0.3.1',
-        'suds-jurko >= 0.7.dev0',
+        'suds-jurko >= 0.6',
         'requests   >= 2.8.1'
 
         # Additionally requires LaTex if you pretend to use printing.
diff --git a/src/sii/__init__.py b/src/sii/__init__.py
index d407605..19d8910 100644
--- a/src/sii/__init__.py
+++ b/src/sii/__init__.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 try:
     __import__('pkg_resources').declare_namespace(__name__)
 except ImportError:
diff --git a/src/sii/lib/__init__.py b/src/sii/lib/__init__.py
index 331d9c3..305e691 100644
--- a/src/sii/lib/__init__.py
+++ b/src/sii/lib/__init__.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ CNS Common Library for SII stuff.
 """
 
diff --git a/src/sii/lib/exchange.py b/src/sii/lib/exchange.py
index be07e7e..3eaff6c 100644
--- a/src/sii/lib/exchange.py
+++ b/src/sii/lib/exchange.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Document Exchange Tooling
 
 TODO  missing parametrizability
diff --git a/src/sii/lib/helpers.py b/src/sii/lib/helpers.py
index 07954ea..d4c0d62 100644
--- a/src/sii/lib/helpers.py
+++ b/src/sii/lib/helpers.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Common Local Utilities.
 """
 import re
diff --git a/src/sii/lib/lib/fileio.py b/src/sii/lib/lib/fileio.py
index f48b9a9..785cbe1 100644
--- a/src/sii/lib/lib/fileio.py
+++ b/src/sii/lib/lib/fileio.py
@@ -1,4 +1,5 @@
-""" Input/Output Functions.
+"""
+Input/Output Functions.
 """
 import os
 import shutil
@@ -39,14 +40,16 @@ def read_create(path, templ_path, encoding=None):
 
         try:
             shutil.copyfile(templ_path, path)
-        except FileNotFoundError as exc:
-            raise FileNotFoundError(
-                "Read/Create could not find or read template file at {0}".format(templ_path)
-            ) from exc
+        except IOError as exc:
+            raise IOError(
+                "Read/Create could not find or read template file at {0}".format(
+                    templ_path)
+            )
 
     with open(path, 'r', encoding=encoding) as fh:
         return fh.read()
 
+
 def write(buff, path, encoding=None):
     """ Normal write to file after path user expansion.
 
diff --git a/src/sii/lib/lib/output.py b/src/sii/lib/lib/output.py
index 8861d1a..09e0b40 100644
--- a/src/sii/lib/lib/output.py
+++ b/src/sii/lib/lib/output.py
@@ -1,6 +1,14 @@
 """ Common Output and Printing Utilities
 """
-from itertools import zip_longest
+from __future__ import print_function
+
+import itertools
+import sys
+
+if sys.version_info < (3, 0):
+    zip_longest = itertools.izip_longest
+else:
+    zip_longest = itertools.izip_longest
 
 __all__ = [
     'print_tabular',
diff --git a/src/sii/lib/lib/xml.py b/src/sii/lib/lib/xml.py
index 137d6e1..9c2ea0c 100644
--- a/src/sii/lib/lib/xml.py
+++ b/src/sii/lib/lib/xml.py
@@ -70,12 +70,12 @@ def __setattr__(self, name, value):
 
         # private methods
         if name.startswith('_'):
-            super().__setattr__(attrname, value)
+            super(XML, self).__setattr__(attrname, value)
             return
 
         # children to append
         if isinstance(value, XML):
-            super().__setattr__(attrname, value)
+            super(XML, self).__setattr__(attrname, value)
             self._node.append(value._node)
             return
 
@@ -85,7 +85,7 @@ def __setattr__(self, name, value):
             node._node.text = str(value)
         except AttributeError:
             node = XML(name=name, text=value)
-            super().__setattr__(attrname, node)
+            super(XML, self).__setattr__(attrname, node)
             self._node.append(node._node)
 
     def __getitem__(self, key):
@@ -223,7 +223,7 @@ def dump_xml(xml_node, **kwargs):
     return buff
 
 
-def print_xml(xml, file=sys.stdout.buffer, end='\n', encoding='UTF-8'):
+def print_xml(xml, file=sys.stdout, end='\n', encoding='UTF-8'):
     if isinstance(xml, XML):
         xml = dump_etree(xml)
 
diff --git a/src/sii/lib/printing/Document.py b/src/sii/lib/printing/Document.py
index 8af813c..9113318 100644
--- a/src/sii/lib/printing/Document.py
+++ b/src/sii/lib/printing/Document.py
@@ -1,4 +1,6 @@
-""" Containing Document Structure
+# -*- coding: utf-8 -*-
+"""
+Containing Document Structure
 """
 from sii.lib.lib import xml
 
diff --git a/src/sii/lib/printing/SectionBarcode.py b/src/sii/lib/printing/SectionBarcode.py
index ba3f6a9..25c5bf3 100644
--- a/src/sii/lib/printing/SectionBarcode.py
+++ b/src/sii/lib/printing/SectionBarcode.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Barcode Section of the Document
 
 Contains:
diff --git a/src/sii/lib/printing/SectionDisclaimer.py b/src/sii/lib/printing/SectionDisclaimer.py
index 0c27bcc..75a2faf 100644
--- a/src/sii/lib/printing/SectionDisclaimer.py
+++ b/src/sii/lib/printing/SectionDisclaimer.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Disclaimer Section of the Document (you might want to subclass this one)
 
 Contains:
diff --git a/src/sii/lib/printing/SectionEmitter.py b/src/sii/lib/printing/SectionEmitter.py
index edb2150..cd18c71 100644
--- a/src/sii/lib/printing/SectionEmitter.py
+++ b/src/sii/lib/printing/SectionEmitter.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Emitter Section of the Document
 
 Contains:
diff --git a/src/sii/lib/printing/SectionItems.py b/src/sii/lib/printing/SectionItems.py
index cf409f8..235d65b 100644
--- a/src/sii/lib/printing/SectionItems.py
+++ b/src/sii/lib/printing/SectionItems.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Items Section of the Document
 
 Contains:
@@ -72,7 +73,7 @@ def __init__(self, column_layout, table_margins=False, draft=False, provider=Fal
             '%s', '%s', '%s', '%s', '%s'
         )
 
-    def append_row(self, row: tuple):
+    def append_row(self, row):
         """ Expecting the column tuple to be in the expected order the column layout was set up at
         init time.
         """
diff --git a/src/sii/lib/printing/SectionPayments.py b/src/sii/lib/printing/SectionPayments.py
index ec0a980..8bd9b9b 100644
--- a/src/sii/lib/printing/SectionPayments.py
+++ b/src/sii/lib/printing/SectionPayments.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Payments Section of the Document
 
 Contains:
diff --git a/src/sii/lib/printing/SectionPreamble.py b/src/sii/lib/printing/SectionPreamble.py
index 86e38ec..5cda55a 100644
--- a/src/sii/lib/printing/SectionPreamble.py
+++ b/src/sii/lib/printing/SectionPreamble.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ LaTeX document configuration preamble
 """
 import sys
diff --git a/src/sii/lib/printing/SectionReceiver.py b/src/sii/lib/printing/SectionReceiver.py
index 4aac30e..9c9dd49 100644
--- a/src/sii/lib/printing/SectionReceiver.py
+++ b/src/sii/lib/printing/SectionReceiver.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Receiver Section in the Document
 
 Contains:
diff --git a/src/sii/lib/printing/SectionReferences.py b/src/sii/lib/printing/SectionReferences.py
index 091bbce..1d9ca61 100644
--- a/src/sii/lib/printing/SectionReferences.py
+++ b/src/sii/lib/printing/SectionReferences.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ References Section of the Document
 
 Contains:
diff --git a/src/sii/lib/printing/SectionSignature.py b/src/sii/lib/printing/SectionSignature.py
index ee88cfc..66241cc 100644
--- a/src/sii/lib/printing/SectionSignature.py
+++ b/src/sii/lib/printing/SectionSignature.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Signature Section of the Document
 
 Contains:
diff --git a/src/sii/lib/printing/SectionSiiPatch.py b/src/sii/lib/printing/SectionSiiPatch.py
index c7cbd35..2322099 100644
--- a/src/sii/lib/printing/SectionSiiPatch.py
+++ b/src/sii/lib/printing/SectionSiiPatch.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ SII Document Patch.
 
 Contains:
diff --git a/src/sii/lib/printing/SectionTotals.py b/src/sii/lib/printing/SectionTotals.py
index 1c29179..914bba1 100644
--- a/src/sii/lib/printing/SectionTotals.py
+++ b/src/sii/lib/printing/SectionTotals.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Totals Section of the Document
 
 Contains:
diff --git a/src/sii/lib/printing/TemplateElement.py b/src/sii/lib/printing/TemplateElement.py
index 4f56bd3..02b33db 100644
--- a/src/sii/lib/printing/TemplateElement.py
+++ b/src/sii/lib/printing/TemplateElement.py
@@ -25,19 +25,19 @@ def resources(self):
         return []
 
     @property
-    def carta(self) -> str:
+    def carta(self):
         """ Create TeX Template for printable medium: "US Letter"
         """
         raise NotImplementedError
 
     @property
-    def oficio(self) -> str:
+    def oficio(self):
         """ Create TeX Template for printable medium: "American Foolscap"
         """
         raise NotImplementedError
 
     @property
-    def thermal80mm(self) -> str:
+    def thermal80mm(self):
         """ Create TeX Template for printable medium: "Thermal endless 80mm width"
         """
         raise NotImplementedError
diff --git a/src/sii/lib/printing/__init__.py b/src/sii/lib/printing/__init__.py
index ace2af7..242618f 100644
--- a/src/sii/lib/printing/__init__.py
+++ b/src/sii/lib/printing/__init__.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ SII Document Templating and Printing Submodule.
 """
 from .Document import Document
diff --git a/src/sii/lib/printing/barcode/Barcode.py b/src/sii/lib/printing/barcode/Barcode.py
index 25d1659..f1284c3 100644
--- a/src/sii/lib/printing/barcode/Barcode.py
+++ b/src/sii/lib/printing/barcode/Barcode.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Barcode Creation (PDF417)
 """
 import os
diff --git a/src/sii/lib/printing/barcode/PDF417.py b/src/sii/lib/printing/barcode/PDF417.py
index bf5f0f0..e98ee8d 100644
--- a/src/sii/lib/printing/barcode/PDF417.py
+++ b/src/sii/lib/printing/barcode/PDF417.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ PDF417 Barcode Generator.
 """
 import os
diff --git a/src/sii/lib/printing/barcode/__init__.py b/src/sii/lib/printing/barcode/__init__.py
index dc96099..bff5b7c 100644
--- a/src/sii/lib/printing/barcode/__init__.py
+++ b/src/sii/lib/printing/barcode/__init__.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Barcode Generation for the SII Document Printing Submodule.
 """
 from .PDF417 import PDF417
diff --git a/src/sii/lib/printing/helpers.py b/src/sii/lib/printing/helpers.py
index 3743e5a..40a14c6 100644
--- a/src/sii/lib/printing/helpers.py
+++ b/src/sii/lib/printing/helpers.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Printing specific helpers.
 """
 import re
diff --git a/src/sii/lib/printing/printing.py b/src/sii/lib/printing/printing.py
index 105b67d..5bd3918 100644
--- a/src/sii/lib/printing/printing.py
+++ b/src/sii/lib/printing/printing.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ SII Document Printable Template Generation and Printing
 """
 import re
diff --git a/src/sii/lib/ptcl/Seed.py b/src/sii/lib/ptcl/Seed.py
index 68e4704..292ee70 100644
--- a/src/sii/lib/ptcl/Seed.py
+++ b/src/sii/lib/ptcl/Seed.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ SII WebService Authentication Seed.
 """
 import re
diff --git a/src/sii/lib/ptcl/Token.py b/src/sii/lib/ptcl/Token.py
index 0faa5e4..a462927 100644
--- a/src/sii/lib/ptcl/Token.py
+++ b/src/sii/lib/ptcl/Token.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ SII WebService Authentication Token.
 """
 import re
@@ -47,7 +48,7 @@ def __init__(self, seed, key_path, cert_path, sii_host="https://palena.sii.cl/DT
         self._token_etree   = self._prepare_token_xml(self._token_xml)
         self._token_values  = self._parse_token_xml(self._token_etree)
 
-    def _build_token_request_xml(self, seed: str) -> str:
+    def _build_token_request_xml(self, seed):
         """
         <getToken>
             <item>
diff --git a/src/sii/lib/ptcl/__init__.py b/src/sii/lib/ptcl/__init__.py
index 4f7f822..6d80a21 100644
--- a/src/sii/lib/ptcl/__init__.py
+++ b/src/sii/lib/ptcl/__init__.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ SII Protocol Objects.
 """
 from .Seed  import Seed
diff --git a/src/sii/lib/ptcl/helpers.py b/src/sii/lib/ptcl/helpers.py
index 491cfde..f0397e9 100644
--- a/src/sii/lib/ptcl/helpers.py
+++ b/src/sii/lib/ptcl/helpers.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Protocol Helpers.
 """
 import time
diff --git a/src/sii/lib/schemas.py b/src/sii/lib/schemas.py
index ef75896..047a95d 100644
--- a/src/sii/lib/schemas.py
+++ b/src/sii/lib/schemas.py
@@ -1,7 +1,10 @@
+# -*- coding: utf-8 -*-
 """ Schema Providers.
 """
 from datetime import datetime
 
+import sys
+
 from . import lib
 from . import types
 
@@ -53,7 +56,7 @@ def resolve_schema(xml):
     try:
         path = SCHEMA_FILES[root.tag]
     except KeyError as exc:
-        raise KeyError("Could not find schema for root tag '{0}'".format(root.tag)) from exc
+        raise KeyError("Error: {}\nCould not find schema for root tag '{0}'".format(exc, root.tag))
     else:
         return path
 
diff --git a/src/sii/lib/signature.py b/src/sii/lib/signature.py
index 390d97b..3de0568 100644
--- a/src/sii/lib/signature.py
+++ b/src/sii/lib/signature.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ SII Document Signing Process Functions
 """
 import xmlsec
diff --git a/src/sii/lib/stamping.py b/src/sii/lib/stamping.py
index abb7d7e..6ad5f56 100644
--- a/src/sii/lib/stamping.py
+++ b/src/sii/lib/stamping.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ Creation and management of SII Digital Stamp Utilities
 """
 import re
diff --git a/src/sii/lib/upload.py b/src/sii/lib/upload.py
index 1b24fc8..b23b3c5 100644
--- a/src/sii/lib/upload.py
+++ b/src/sii/lib/upload.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ SII Documents Upload Utilities
 """
 import requests
diff --git a/src/sii/lib/validation.py b/src/sii/lib/validation.py
index 980152a..0b14e2a 100644
--- a/src/sii/lib/validation.py
+++ b/src/sii/lib/validation.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """ SII Document Signature Verification Process Functions
 """
 from io   import BytesIO