StructRNA of type DP_OT_draw_operator has been removed - when swiching to a new scene

[gpogorzelski]

Hi,
After opening blender client, I install the widget and invoke it with Ctrl + Shift + k. Everything works fine, the widget displays and works. Then with the widget displayed I click New -> General -> Don't save. In the Console I get the following stack trace:

Read prefs: C:\Users\Grzegorz\AppData\Roaming\Blender Foundation\Blender\2.90\config\userpref.blend
found bundled python: C:\Program Files\Blender Foundation\Blender 2.90\2.90\python
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed
Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\bl_ui_widgets-master\bl_ui_draw_op.py", line 82, in draw_callback_px
for widget in self.widgets:
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\modules\bpy_types.py", line 717, in getattribute
properties = StructRNA.path_resolve(self, "properties")
ReferenceError: StructRNA of type DP_OT_draw_operator has been removed

Then, in the new scene, when I press Ctrl + Shift + k, the widget displays, but in the consol window I get a continuous stream of errors exactly like above. Any idea how to fix this?