Hi Radek,
At the beginning when I wanted to test the demo project, I had encountered the same problem because I had not installed MySql on the station.
But if I well understand, you have install MySql on your Proview station so maybe you had a problem during MySql install.

After MySql install, you must be to define the Proview access as following (use terminal):

1: mysql -u root -p ........... login 'MySql' with root rights
2: GRANT ALL ON *.* TO 'pwrp'@'localhost'; ........... declare 'pwrp' as user with all privileges
3: \q ........... quit 'MySql' config

note: root password = pwrp

Maybe you can try to uninstall and install again MySql5.

In my case I have realized the video tutorial with Linux Mint 17.3 + Proview5.4 + MySql5 and all run fine.

Maybe Claes can add some others advices about your problem.
I hope you will solve it easily.

/Ben

Hi Ben,
I reistalled MySQL and made 'pwrp' user with 'pwrp' password (I used different password before), but the problem still remains - when I want to open DsTrend or DsTrendCurve or History Trend - all windows opened after xtt suddenly close. When I check data stored in MySQL there is nothing missing - so I assume that MySQL server works OK.

Radek

Hello!
I have a similar problem with disappearing windows.
When trying to call Trend using commands or submenu - disappear windows.
Did anyone find a solution?

Regards