Weronika,
Yes the tutorial networks loaded quickly, no problem. But all my old nets and 
sims take 4 mins to load. 
Regards,
John

Sent from my iPad

> On Dec 18, 2020, at 4:35 PM, Weronika <[email protected]> wrote:
> 
> 
> Hi,
> I just wanted to write my own email, but I saw this one. I think the issue 
> which I am facing today can be connected.
> Does any network work for you John? For example like Jakob suggested the 
> documentation examples.
> 
> For me I can see the black screen in sumo-gui and also netedit, even if I 
> load an easy example from the documentation.
> A few days ago it all worked good, I didn't change anything and today is 
> black. (if I make the window smaller then it gets green)
> If I load the whole simulation in sumo-gui then the whole action seems to 
> take part, but with a black screen.
> 
> I tried on different SUMO versions (one from today and one which worked for 
> me before) and with the same result.
> I run  'sumo -n yournet.net.xml -v' and 'netconvert -s yournet.net.xml -v' in 
> the console and it runs correctly
> 
> I will try with graphics drivers, but the weird thing that everything was 
> fine a few days ago....
> <Zrzut ekranu 2020-12-18 o 19.02.32 1.png>
> 
> <Zrzut ekranu 2020-12-18 o 19.02.35.png>
> 
> 
> best,
> Weronika
> 
> pt., 18 gru 2020 o 21:22 Jakob Erdmann <[email protected]> napisał(a):
>> Your issue is unexpected as we routinely load old networks on Win10 PCs.
>> What were those "many Win10" errors you encountered?
>> Things to try:
>> - updating graphics drivers
>> - try running 'sumo -n yournet.net.xml -v' and 'netconvert -s 
>> yournet.net.xml -v'
>> - load a network from the documentation examples
>> 
>> regards,
>> Jakob
>> 
>> 
>> Am Fr., 18. Dez. 2020 um 20:00 Uhr schrieb John Doggett <[email protected]>:
>>> I developed many simulations in SUMO three years ago and have now just 
>>> started a new project. So I downloaded the latest version. After many 
>>> Win10 errors I have got a Netedit window up. When I load a network that 
>>> I have just completed in the old version it seems to load and then the 
>>> window goes completely black and the app hangs. The same is true of 
>>> running the GUI. The last simulation I have loads then blank black screen.
>>> 
>>> Any advice?
>>> 
>>> John
>>> 
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