[Cura 4.4.1 Fatal Error on Launch]

Should I still do that if this has already been reported?  I'm pretty sure it has been a bunch of times.  Is there any workaround or should I just keep using 3.2.1?  4.4.1 was working before I reinstalled it, so it seems like it should be possible to get it working again...

[Cura 4.4.1 Fatal Error on Launch]

Like the title says, I'm getting the fatal error when I try to launch 4.4.1.  I've only been printing/using Cura for about a week, 4.4.1 was working for a few days and my prints were coming out good (i3 Mega).  Then, seemingly for no reason, everything started to fail.  I completed a print (final 2 bed leveling knobs), put those on the printer, and ever since then I can't get a skirt or the first layer to stick.  I heard some people resolved it by reverting Cura to defaults, so I went one step further and reinstalled Cura.  And that's when I started getting the fatal error.  Tried version 4.4.0, also got fatal error.  I'm able to run 15.04.6, which came with the printer, and 3.2.1 without errors.  I did update the printer's firmware in the first couple of days, had successful prints after that, but maybe that has something to do with the error.

 

Quote

Crash Log:

Thread 0x000015a4 (most recent call first):

File "C:\Program Files\Ultimaker Cura 4.4\plugins\RemovableDriveOutputDevice\RemovableDrivePlugin.py", line 61 in _updateThread

File "threading.py", line 862 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00002120 (most recent call first):

File "threading.py", line 297 in wait

File "zeroconf.py", line 1569 in wait

File "zeroconf.py", line 1153 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00000988 (most recent call first):

File "threading.py", line 297 in wait

File "threading.py", line 549 in wait

File "C:\Program Files\Ultimaker Cura 4.4\plugins\UM3NetworkPrinting\src\Network\ZeroConfClient.py", line 74 in _handleOnServiceChangedRequests

File "threading.py", line 862 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00001030 (most recent call first):

File "threading.py", line 297 in wait

File "zeroconf.py", line 1569 in wait

File "zeroconf.py", line 1017 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x000003e4 (most recent call first):

File "zeroconf.py", line 946 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00000e74 (most recent call first):

File "C:\Program Files\Ultimaker Cura 4.4\plugins\USBPrinting\USBPrinterOutputDeviceManager.py", line 86 in _updateThread

File "threading.py", line 862 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x000029e0 (most recent call first):

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\Backend\Backend.py", line 150 in _storeStderrToLogThread

File "threading.py", line 862 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x000018a0 (most recent call first):

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\Backend\Backend.py", line 138 in _storeOutputToLogThread

File "threading.py", line 862 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x000007a8 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00000634 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00001fcc (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00001fc8 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00001fc4 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00000494 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x0000133c (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x000026a4 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00001450 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x000013c8 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00000d50 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00002058 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00002ac8 (most recent call first):

File "serial\serialwin32.py", line 362 in reset_output_buffer

File "serial\serialutil.py", line 587 in flushOutput

File "C:\Program Files\Ultimaker Cura 4.4\plugins\USBPrinting\avr_isp\stk500v2.py", line 45 in connect

File "C:\Program Files\Ultimaker Cura 4.4\plugins\USBPrinting\AutoDetectBaudJob.py", line 34 in run

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 121 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x00002ac0 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x0000101c (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Thread 0x000013c4 (most recent call first):

File "threading.py", line 293 in wait

File "threading.py", line 424 in acquire

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 86 in _nextJob

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\JobQueue.py", line 112 in run

File "threading.py", line 914 in _bootstrap_inner

File "threading.py", line 882 in _bootstrap

 

Current thread 0x00001434 (most recent call first):

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\cura\CrashHandler.py", line 306 in _logInfoWidget

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\cura\CrashHandler.py", line 156 in _createDialog

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\cura\CrashHandler.py", line 77 in __init__

File "X:\4.4-exe\build\inst\bin\cura_app.py", line 111 in exceptHook

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\UM\Qt\QtApplication.py", line 341 in exec_

File "X:\4.4-exe\build\inst\lib\python3.5\site-packages\cura\CuraApplication.py", line 804 in run

File "X:\4.4-exe\build\inst\bin\cura_app.py", line 180 in <module>

File "Console.py", line 24 in <module>

File "<frozen importlib._bootstrap>", line 634 in _load_backward_compatible

File "<frozen importlib._bootstrap>", line 664 in _load_unlocked

File "<frozen importlib._bootstrap>", line 957 in _find_and_load_unlocked

File "<frozen importlib._bootstrap>", line 968 in _find_and_load

File "__startup__.py", line 12 in <module>

File "<frozen importlib._bootstrap>", line 634 in _load_backward_compatible

File "<frozen importlib._bootstrap>", line 664 in _load_unlocked

File "<frozen importlib._bootstrap>", line 957 in _find_and_load_unlocked

File "<frozen importlib._bootstrap>", line 968 in _find_and_load