Some crashes on fresh installation on Ubuntu 21.04

[polgia0]

Version of DWSIM 6.5.4
OS info Unix 5.11.0.22 (ubuntu 21.04)
Mono Framework v6 12.0.122

Installation via deb package without problems. However, some crahes happens:

1- if I open "Global Settings" the system crahes. On the console I get the error: (DWSIM.UI.Desktop:57740): Gtk-WARNING **: 19:28:17.545: Unable to show '': Operazione non supportata (--> Unsupported operation)

1-if I create a "New Flowsheet" I can create a material stream with the Wizard (only water inside). When a double click on the arrow DWSIN crashes. I have noticed that the new Flowsheet is created on the console I get the error:
(DWSIM.UI.Desktop:66519): Gtk-WARNING **: 19:36:06.102: Unable to show '': Operazione non supportata

I suppose some GTK module are not loaded correctly. I just uploaded the library:
sudo apt install libcanberra-gtk-module libcanberra-gtk3-module
at the latest version of the repository.

Some suggestions ? Thanks

[Daniel Medeiros]

DWSIM uses GTK 2, do you have it?

[polgia0]

Yes, I installed via: sudo apt-get install gtk2-engines.
Same problems in the two cases. It really seems that something is missing and the system crahes whenit cannot find it. Is there any way to list what is needed ? Thanks

[polgia0]

The error is not related to permission. It crashes as root too. It is not related to Wayland and X11, apprently same behavior.

[juan landauro]

Ubuntu 20.04 (Hirsute): Followed instruction using wine, i.e.$ WINEPREFIX=$HOME/Desktop/dwsim-wine_v6.6.0/wineprefix wine C:/DWSIM6/DWSIM.exe. Result--> 0009:err:environ:run_wineboot boot event wait timed out--> 0015:err:service:process_send_command service protocol error - failed to write pipe!
After this the event stuck!!! Help, please