btketner1

Yes Sir! Thank you! Fixed both 4.11.0 and 4.12.0

I don't have Chitubox. It works to slice, I just cannot preview it.

I'm getting the same thing, my post is actually above this one in the forum. Only when I go to view the sliced .STL it comes up with the error panel, I send it every time, then the program closes. So no way to preview your sliced item.

Traceback (most recent call last): File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\Qt\Bindings\MainWindow.py", line 255, in _render File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\Qt\QtRenderer.py", line 163, in render File "C:\Program Files\Ultimaker Cura 4.12.0\plugins\SimulationView\SimulationPass.py", line 65, in render self._layer_shader.setUniformValue("u_active_extruder", float(max(0, self._extruder_manager.activeExtruderIndex))) AttributeError: 'NoneType' object has no attribute 'setUniformValue' Thread 0x00001100 (most recent call first): File "C:\Program Files\Ultimaker Cura 4.12.0\plugins\USBPrinting\USBPrinterOutputDeviceManager.py", line 87 in _updateThread File "threading.py", line 870 in run File "threading.py", line 932 in _bootstrap_inner File "threading.py", line 890 in _bootstrap Thread 0x000018e4 (most recent call first): File "threading.py", line 306 in wait File "zeroconf\__init__.py", line 2534 in wait File "zeroconf\__init__.py", line 1715 in run File "threading.py", line 932 in _bootstrap_inner File "threading.py", line 890 in _bootstrap Thread 0x00001070 (most recent call first): File "threading.py", line 306 in wait File "threading.py", line 558 in wait File "C:\Program Files\Ultimaker Cura 4.12.0\plugins\UM3NetworkPrinting\src\Network\ZeroConfClient.py", line 81 in _handleOnServiceChangedRequests File "threading.py", line 870 in run File "threading.py", line 932 in _bootstrap_inner File "threading.py", line 890 in _bootstrap Thread 0x00000e80 (most recent call first): File "zeroconf\__init__.py", line 1369 in run File "threading.py", line 932 in _bootstrap_inner File "threading.py", line 890 in _bootstrap Thread 0x0000065c (most recent call first): File "C:\Program Files\Ultimaker Cura 4.12.0\plugins\RemovableDriveOutputDevice\RemovableDrivePlugin.py", line 61 in _updateThread File "threading.py", line 870 in run File "threading.py", line 932 in _bootstrap_inner File "threading.py", line 890 in _bootstrap Thread 0x000012fc (most recent call first): File "threading.py", line 302 in wait File "threading.py", line 433 in acquire File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\JobQueue.py", line 98 in _nextJob File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\JobQueue.py", line 124 in run File "threading.py", line 932 in _bootstrap_inner File "threading.py", line 890 in _bootstrap Thread 0x000013e8 (most recent call first): File "threading.py", line 302 in wait File "threading.py", line 433 in acquire File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\JobQueue.py", line 98 in _nextJob File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\JobQueue.py", line 124 in run File "threading.py", line 932 in _bootstrap_inner File "threading.py", line 890 in _bootstrap Current thread 0x0000150c (most recent call first): File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\cura\CrashHandler.py", line 396 in _logInfoWidget File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\cura\CrashHandler.py", line 182 in _createDialog File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\cura\CrashHandler.py", line 86 in __init__ File "C:\build\Cura\4.12-exe\build\inst\bin\cura_app.py", line 159 in exceptHook File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\cura\CrashHandler.py", line 452 in _show File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\Event.py", line 218 in call File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\Qt\QtApplication.py", line 479 in event File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\cura\CuraApplication.py", line 1094 in event File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\cura\CrashHandler.py", line 452 in _show File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\Event.py", line 218 in call File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\Qt\QtApplication.py", line 479 in event File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\cura\CuraApplication.py", line 1094 in event File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\UM\Qt\QtApplication.py", line 393 in exec_ File "C:\build\Cura\4.12-exe\build\inst\lib\python3.8\site-packages\cura\CuraApplication.py", line 871 in run File "C:\build\Cura\4.12-exe\build\inst\bin\cura_app.py", line 233 in <module> File "Console.py", line 36 in run File "__startup__.py", line 74 in run