Hello, I am using SMath on Ubuntu and have a problem about shortcut of symbolic differentiation. Ctrl+. gives nothing. How can I solve this problem?

Why should it be Ctrl + in Ubuntu ... Smath Win Ctrl .

This is what i see, but it does not work.

Wrote

This is what i see, but it does not work

How do you know it does not work ?
I don't see what's under the error message

No error message, i press ctrl and . but nothing happens.

Wrote

No error message, i press ctrl and . but nothing happens.

Can't doctor without the maths in *.sm or an image.
Nobody has ever seen the hidden face of the moon.

Hello.

Wrote

No error message, i press ctrl and . but nothing happens.

Thank you! I will check this.

Best regards.

Wrote

This is what i see, but it does not work.

Confirmed

SMath Studio: SMath Studio Desktop 0.98.6585.18710, x64
OS: Unix 3.16.0.38 (friendly name not found, x64)
Screen: 1556x945 px, 96x96 dpi, 96 GP.DPI, 1 GP.SRF
Localization: separator=; decimal symbol=; system decimal symbol=; language=ENG
Frameworks: MONO 4.2.2 (Stable 4.2.2.30/996df3c Mon Feb 15 17:30:30 UTC 2016)

LinuxMint 17.2 on a Virtualbox 5.1.4 (not really uptodate but never touch a running system...)