Random apps crash in Antergos GNOME
 

Some programs run perfectly well, like Firefox, Banshee, etc. Others crash after a few seconds. That's the case of qBittorrent, Flacon, MuseScore, etc. Chromium doesn't even open. Ideas?
Some specs: GNOME Versión 3.12.2
Base system: Arch Linux 64-bit

open the app in question in a terminal, and have a look what error messages it spits out when it crashes.
you can post them here, if you want. but please use code tags.

possible bug
 

This is what I get:
$ libpng warning: iCCP: profile 'Photoshop ICC profile': 'RGB ': RGB color space not permitted on grayscale PNG
Violación de segmento (`core' generado)
Reported as a bug:
https://bugs.launchpad.net/widelands/+bug/1195724
Still trying to fix it though

Flacon shows:
$ flacon
Violación de segmento (`core' generado)

That would be "Segmentation fault (core dumped)" in English

downgrading libxcursor fixes the problem
 

I could finally solve this problem, after spending two days digging in a wide range of forums going from ubuntu ones to arch, launchpad, google chrome, etc.
I am going to list all the applications that crashed after a while: Firefox, Seamonkey, qBittorrent, Flacon, Vlc, museScore. (each one showing 'core dumped' error in terminal)
There were a few that didn't even open: Chromium, LibreOffice.
I read that the package called "libxcursor" was responsible for such thing. The solution consisted simply on downgrading to an older version, which I accomplished via PacmanXG package manager. So libxcursor 1.1.14-2 was replaced with 1.1.14-1. Every program I listed runs smoothly right now. Hope they fix this bug (?) in a future release.