diff --git a/booleans/boolean_slice.py b/booleans/boolean_slice.py
index 814579e..14265fd 100644
--- a/booleans/boolean_slice.py
+++ b/booleans/boolean_slice.py
@@ -13,7 +13,7 @@ class ND_OT_bool_slice(bpy.types.Operator):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 2
+            return len(context.selected_objects) == 2 and all(obj.type == 'MESH' for obj in context.selected_objects)
 
 
     def execute(self, context):
diff --git a/booleans/vanilla.py b/booleans/vanilla.py
index bfba0bf..4b37f06 100644
--- a/booleans/vanilla.py
+++ b/booleans/vanilla.py
@@ -20,7 +20,7 @@ class ND_OT_bool_vanilla(bpy.types.Operator):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 2
+            return len(context.selected_objects) == 2 and all(obj.type == 'MESH' for obj in context.selected_objects)
 
 
     def execute(self, context):
diff --git a/power_mods/array_cubed.py b/power_mods/array_cubed.py
index 096a81c..6f22608 100644
--- a/power_mods/array_cubed.py
+++ b/power_mods/array_cubed.py
@@ -136,7 +136,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
 
     def prepare_new_operator(self, context):
diff --git a/power_mods/bevel.py b/power_mods/bevel.py
index 659b50e..4dddb91 100644
--- a/power_mods/bevel.py
+++ b/power_mods/bevel.py
@@ -124,7 +124,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
 
     def prepare_new_operator(self, context):
diff --git a/power_mods/circular_array.py b/power_mods/circular_array.py
index 949b551..bc29df2 100644
--- a/power_mods/circular_array.py
+++ b/power_mods/circular_array.py
@@ -127,8 +127,13 @@ def invoke(self, context, event):
 
     @classmethod
     def poll(cls, context):
-        if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 2
+        if context.mode == 'OBJECT' and len(context.selected_objects) == 2:
+            a, b = context.selected_objects
+            reference_obj = a if a.name != context.object.name else b
+
+            return reference_obj.type == 'MESH'
+        else:
+            return False
 
 
     def add_array_modifier(self):
diff --git a/power_mods/mirror.py b/power_mods/mirror.py
index d05378b..757e907 100644
--- a/power_mods/mirror.py
+++ b/power_mods/mirror.py
@@ -95,7 +95,14 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) > 0 and len(context.selected_objects) <= 2
+            if len(context.selected_objects) == 1 and context.object.type == 'MESH':
+                return True
+
+            if len(context.selected_objects) == 2:
+                a, b = context.selected_objects
+                reference_obj = a if a.name != context.object.name else b
+
+                return reference_obj.type == 'MESH'
 
 
     def add_mirror_modifier(self):
diff --git a/power_mods/profile_extrude.py b/power_mods/profile_extrude.py
index 6ad33fa..629e350 100644
--- a/power_mods/profile_extrude.py
+++ b/power_mods/profile_extrude.py
@@ -121,7 +121,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
     
     def prepare_new_operator(self, context):
diff --git a/power_mods/screw.py b/power_mods/screw.py
index 2feafe7..0b826cd 100644
--- a/power_mods/screw.py
+++ b/power_mods/screw.py
@@ -138,7 +138,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
 
     def prepare_new_operator(self, context):
diff --git a/power_mods/solidify.py b/power_mods/solidify.py
index 9d472da..b71eed0 100644
--- a/power_mods/solidify.py
+++ b/power_mods/solidify.py
@@ -125,7 +125,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
     
     def prepare_new_operator(self, context):
diff --git a/power_mods/square_array.py b/power_mods/square_array.py
index 02bc1ac..d799c9e 100644
--- a/power_mods/square_array.py
+++ b/power_mods/square_array.py
@@ -134,7 +134,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
 
     def prepare_new_operator(self, context):
diff --git a/power_mods/weighted_normal_bevel.py b/power_mods/weighted_normal_bevel.py
index f2d3030..b130755 100644
--- a/power_mods/weighted_normal_bevel.py
+++ b/power_mods/weighted_normal_bevel.py
@@ -104,7 +104,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
 
     def prepare_new_operator(self, context):
diff --git a/sketching/geo_lift.py b/sketching/geo_lift.py
index d5223dd..5c72a7a 100644
--- a/sketching/geo_lift.py
+++ b/sketching/geo_lift.py
@@ -86,7 +86,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
 
     def register_mode(self):
diff --git a/sketching/view_align.py b/sketching/view_align.py
index 35ccf2a..d60eb69 100644
--- a/sketching/view_align.py
+++ b/sketching/view_align.py
@@ -85,7 +85,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
 
     def set_selection_mode(self, context):
diff --git a/utils/hydrate.py b/utils/hydrate.py
index 09387ad..82451d0 100644
--- a/utils/hydrate.py
+++ b/utils/hydrate.py
@@ -84,7 +84,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
     
     def operate(self, context):
diff --git a/utils/name_sync.py b/utils/name_sync.py
index 77ce14a..2acda79 100644
--- a/utils/name_sync.py
+++ b/utils/name_sync.py
@@ -10,7 +10,8 @@ class ND_OT_name_sync(bpy.types.Operator):
 
     @classmethod
     def poll(cls, context):
-        return len(context.selected_objects) >= 1
+        if context.mode == 'OBJECT':
+            return len(context.selected_objects) >= 1 and all(obj.type == 'MESH' for obj in context.selected_objects)
 
 
     def execute(self, context):
diff --git a/utils/seams.py b/utils/seams.py
index 9346360..b036611 100644
--- a/utils/seams.py
+++ b/utils/seams.py
@@ -95,7 +95,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
     
     def operate(self, context):
diff --git a/utils/set_lod_suffix.py b/utils/set_lod_suffix.py
index 3c5426b..dd55841 100644
--- a/utils/set_lod_suffix.py
+++ b/utils/set_lod_suffix.py
@@ -17,7 +17,8 @@ class ND_OT_set_lod_suffix(bpy.types.Operator):
 
     @classmethod
     def poll(cls, context):
-        return len(context.selected_objects) >= 1
+        if context.mode == 'OBJECT':
+            return len(context.selected_objects) >= 1 and all(obj.type == 'MESH' for obj in context.selected_objects)
 
 
     def execute(self, context):
diff --git a/utils/set_origin.py b/utils/set_origin.py
index b412b5b..98a3045 100644
--- a/utils/set_origin.py
+++ b/utils/set_origin.py
@@ -11,8 +11,11 @@ class ND_OT_set_origin(bpy.types.Operator):
 
     @classmethod
     def poll(cls, context):
-        if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 2
+        if context.mode == 'OBJECT' and len(context.selected_objects) == 2:
+            a, b = context.selected_objects
+            reference_obj = a if a.name != context.object.name else b
+
+            return reference_obj.type == 'MESH'
 
 
     def execute(self, context):
diff --git a/utils/smooth.py b/utils/smooth.py
index 0076b4d..a279eb5 100644
--- a/utils/smooth.py
+++ b/utils/smooth.py
@@ -87,7 +87,7 @@ def invoke(self, context, event):
     @classmethod
     def poll(cls, context):
         if context.mode == 'OBJECT':
-            return len(context.selected_objects) == 1
+            return len(context.selected_objects) == 1 and context.object.type == 'MESH'
 
     
     def add_smooth_shading(self, context):