Hmm - I think I have just done what you suggest above and get the same 
error as before. ie:

- create a virtual environment
- activate it
- git clone leo...
- cd leo-editor
- python3 -m pip -r requirements.txt
...
- python3 launchleo.py

and (if VR3 is enabled) I get the same error as before (NB: not sure it is 
exactly what you were reporting):

[image: Capture.PNG]
- 

On Monday, November 4, 2024 at 7:14:10 PM UTC [email protected] wrote:

> After a kernel update on my Linux Mint VM just now, I got the same error - 
> no PyQt6-WebEngine.  Upgrading the PyQt6-x packages didn't fix the error.  
> I installed using requirements.txt into a venv and running in that venv VR3 
> finds the QWebEngine and runs.
>
> On Monday, November 4, 2024 at 6:51:53 AM UTC-5 jkn wrote:
>
>> Hmm, slightly separate point, but now I am trying to replicate things 
>> (enabling viewrendered3) on my Windows machine...
>>
>> I am getting a Windows Error popup: ... Qt6WebEngineCore.dll was not 
>> found...
>>
>> Leo itself doesn't have an error from vr3.
>>
>> I've tried to install/re-install a few things via pip, but no success. 
>> Any pointers?
>>
>> Thanks, jon N
>>
>>
>>
>> On Monday, November 4, 2024 at 2:44:50 AM UTC [email protected] wrote:
>>
>>> On Sunday, November 3, 2024 at 5:55:10 PM UTC-5 jkn wrote:
>>>
>>> Anyway - after putting 'freewin.py' in myLeoSettings.leo (and installing 
>>> QtWebEngineView for PyQt6 - interestingly VR3 does not seem to give a 
>>> warning if this is not installed) - I seem to be making progress, both with 
>>> VR3 and with Freewin.
>>>
>>>
>>> Freewin will fall back to using a QTextBrowser for the rendered view if 
>>> QWebEngineView isn't installed, and it should emit a message about that.  
>>> VR3 can't work without a QWebEngineView, and it's supposed to emit a 
>>> message about a missing QWebEngineView .  Maybe some recent change has 
>>> stepped on the message, but I don't recall any changes in that part of the 
>>> code.
>>>
>>

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