diff --git a/src/ifcsverchok/__init__.py b/src/ifcsverchok/__init__.py
index 119235ffca..4936c7fb91 100644
--- a/src/ifcsverchok/__init__.py
+++ b/src/ifcsverchok/__init__.py
@@ -33,7 +33,6 @@ import logging
 logger = logging.getLogger('sverchok.ifc')
 from sverchok.ui.nodeview_space_menu import add_node_menu
 
-
 def nodes_index():
     return [
         (
@@ -285,12 +284,6 @@ def register():
 def unregister():
     global imported_modules
     for module in reversed(imported_modules):
-        try:
-            module.unregister()
-        except:
-            logger.error(f"Unable to unregister module: {module}")
+        module.unregister()
     for cls in reversed(CLASSES):
-        try:
-            bpy.utils.unregister_class(cls)
-        except:
-            logger.error(f"Unable to unregister class: {cls}")
+        bpy.utils.unregister_class(cls)
diff --git a/src/ifcsverchok/nodes/ifc/api.py b/src/ifcsverchok/nodes/ifc/api.py
index 2c61a46c2e..cf9784c31b 100644
--- a/src/ifcsverchok/nodes/ifc/api.py
+++ b/src/ifcsverchok/nodes/ifc/api.py
@@ -23,6 +23,8 @@ import ifcsverchok.helper
 from bpy.props import StringProperty, EnumProperty
 from sverchok.node_tree import SverchCustomTreeNode
 from sverchok.data_structure import updateNode
+import logging
+logger = logging.getLogger('sverchok.ifc')
 
 
 def update_usecase(self, context):
@@ -98,8 +100,8 @@ class SvIfcApi(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCor
 
 
 def register():
-    bpy.utils.register_class(SvIfcTooltip)
     bpy.utils.register_class(SvIfcApi)
+    bpy.utils.register_class(SvIfcTooltip)
 
 
 def unregister():
diff --git a/src/ifcsverchok/nodes/ifc/api_WIP.py b/src/ifcsverchok/nodes/ifc/api_WIP.py
index 3c4d7122af..a1f3d7f061 100644
--- a/src/ifcsverchok/nodes/ifc/api_WIP.py
+++ b/src/ifcsverchok/nodes/ifc/api_WIP.py
@@ -26,8 +26,8 @@ from sverchok.data_structure import updateNode
 import importlib
 
 
-class SvIfcTooltip(bpy.types.Operator):
-    bl_idname = "node.sv_ifc_tooltip"
+class SvIfcTooltipWIP(bpy.types.Operator):
+    bl_idname = "node.sv_ifc_tooltipWIP"
     bl_label = "IFC Info"
     tooltip: bpy.props.StringProperty()