diff --git a/openpype/hosts/nuke/api/lib.py b/openpype/hosts/nuke/api/lib.py
index 7e7cd27f90..257bf8d64e 100644
--- a/openpype/hosts/nuke/api/lib.py
+++ b/openpype/hosts/nuke/api/lib.py
@@ -727,7 +727,7 @@ class WorkfileSettings(object):
             log.error(msg)
             nuke.message(msg)
 
-        log.warning(">> root_dict: {}".format(root_dict))
+        log.debug(">> root_dict: {}".format(root_dict))
 
         # first set OCIO
         if self._root_node["colorManagement"].value() \
@@ -1277,6 +1277,7 @@ class ExporterReview:
     def clean_nodes(self):
         for node in self._temp_nodes:
             nuke.delete(node)
+        self._temp_nodes = []
         self.log.info("Deleted nodes...")
 
 
@@ -1301,6 +1302,7 @@ class ExporterReviewLut(ExporterReview):
                  lut_style=None):
         # initialize parent class
         ExporterReview.__init__(self, klass, instance)
+        self._temp_nodes = []
 
         # deal with now lut defined in viewer lut
         if hasattr(klass, "viewer_lut_raw"):
diff --git a/openpype/hosts/nuke/plugins/publish/extract_ouput_node.py b/openpype/hosts/nuke/plugins/publish/extract_ouput_node.py
index a144761e5f..c3a6a3b167 100644
--- a/openpype/hosts/nuke/plugins/publish/extract_ouput_node.py
+++ b/openpype/hosts/nuke/plugins/publish/extract_ouput_node.py
@@ -2,6 +2,7 @@ import nuke
 import pyblish.api
 from avalon.nuke import maintained_selection
 
+
 class CreateOutputNode(pyblish.api.ContextPlugin):
     """Adding output node for each ouput write node
     So when latly user will want to Load .nk as LifeGroup or Precomp
@@ -15,8 +16,8 @@ class CreateOutputNode(pyblish.api.ContextPlugin):
     def process(self, context):
         # capture selection state
         with maintained_selection():
-            active_node = [node for inst in context[:]
-                           for node in inst[:]
+            active_node = [node for inst in context
+                           for node in inst
                            if "ak:family" in node.knobs()]
 
             if active_node:
diff --git a/openpype/hosts/nuke/plugins/publish/extract_thumbnail.py b/openpype/hosts/nuke/plugins/publish/extract_thumbnail.py
index 55f7b746fc..0c9af66435 100644
--- a/openpype/hosts/nuke/plugins/publish/extract_thumbnail.py
+++ b/openpype/hosts/nuke/plugins/publish/extract_thumbnail.py
@@ -1,3 +1,4 @@
+import sys
 import os
 import nuke
 from avalon.nuke import lib as anlib
@@ -5,6 +6,10 @@ import pyblish.api
 import openpype
 
 
+if sys.version_info[0] >= 3:
+    unicode = str
+
+
 class ExtractThumbnail(openpype.api.Extractor):
     """Extracts movie and thumbnail with baked in luts
 
diff --git a/openpype/hosts/nuke/plugins/publish/precollect_workfile.py b/openpype/hosts/nuke/plugins/publish/precollect_workfile.py
index 5d3eb5f609..e10cfe7b47 100644
--- a/openpype/hosts/nuke/plugins/publish/precollect_workfile.py
+++ b/openpype/hosts/nuke/plugins/publish/precollect_workfile.py
@@ -3,7 +3,6 @@ import pyblish.api
 import os
 import openpype.api as pype
 from avalon.nuke import lib as anlib
-reload(anlib)
 
 
 class CollectWorkfile(pyblish.api.ContextPlugin):
diff --git a/openpype/hosts/nuke/startup/write_to_read.py b/openpype/hosts/nuke/startup/write_to_read.py
index deb5ce1b82..295a6e3c85 100644
--- a/openpype/hosts/nuke/startup/write_to_read.py
+++ b/openpype/hosts/nuke/startup/write_to_read.py
@@ -69,7 +69,8 @@ def evaluate_filepath_new(k_value, k_eval, project_dir, first_frame):
     frames = sorted(frames)
     firstframe = frames[0]
     lastframe = frames[len(frames) - 1]
-    if lastframe < 0:
+
+    if int(lastframe) < 0:
         lastframe = firstframe
 
     return filepath, firstframe, lastframe