Daniels118, thank you very much, I updated the plugin and now everything is ok!

<r>Bingo, thank you!<br/>
I have the log in /users/myusername/appdata/roaming/eteks<br/>
<br/>
So, here is the log when I have one file opened and try to open second one (and nothing happens) <br/>
<URL url="https://woodmouse.ru/test/log-nosecondinstance.txt">https://woodmouse.ru/test/log ...

Nope, there is no eTeks folder neither in users, nor anywhere on ssd.

There is also no folder or file like this in my user folder. I also checked all todays files in Users - no way.

<r>Hi! Thank you for your answer, but I still cannot get log.file<br/>
<br/>
If I make commandline like below SH doesn't start at all:<br/>
"C:\Program Files\Sweet Home 3D\SweetHome3D.exe" 2>MyLogFile.log<br/>
"C:\Program Files\Sweet Home 3D\SweetHome3D.exe" > MyLogFile.log 2>&1<br/>
<br/>
Also ...

<r><QUOTE><s>[quote]</s>Would you have a too high value for the max memory in <I><s>[i]</s>SweetHome3D.l4j.ini<e>[/i]</e></I> fille, if you tried it?<e>[/quote]</e></QUOTE>

Hi Emmanuel!<br/>
There was no sweetHome3D.l4j.ini in C:\Program Files\Sweet Home 3D folder, I tried to add it, put there ...

There is 40Gb free on the SSD.
Also when SH is not starting for the fist time sometimes helps to stop Zulu Platform x64 Architect from Taskmanager, and start SH again

You can make 10 as floor thikness, draw room as a vector, and save the room as a furniture

<t>Hi!<br/>
<br/>
Last time second instance of SH3D 7.1 could not start on my Win 8.1 8gb<br/>
Sometime even the first one. I suppose it's some memory issue, because if when no instance is starting, closing all programs sometimes helpfull <br/>
<br/>
Please, tell me where to dig.<br/>
<br/>
Yours ...

<r>@Daniels118,<br/>
<br/>
Unfortunately, I didn't manage to put the dimension lines according to the instructions in the help.<br/>
Sometimes nothing happens when clicking on an object, sometimes it shows 0.00<br/>
<br/>
I think, video tutorial is good idea for this whole mechanism to demonstrate ...