Gtk-ERROR **: GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported Trace/breakpoin

[Marcidif98]

HI, i am a new user of mint 18.2 MATE and since i've made some updates i can't open the control center neither from the Menu nor from the terminal, and i can't use all the settings of the administration and preferences, when i try to open them they simply doesn't. I tried to open control center from the terminal and it gives me this:

(mate-control-center:8894): Gtk-ERROR **: GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported
Trace/breakpoint trap

What can i do?

System: Host: marcello-PC Kernel: 4.4.0-72-generic x86_64 (64 bit gcc: 5.4.0)
Desktop: MATE 1.18.0 (Gtk 3.20.8-1ubuntu0~ppa1)
Distro: Linux Mint 18.2 Sonya
Machine: System: HP product: HP Notebook v: Type1ProductConfigId
Mobo: HP model: 81EC v: 61.28 Bios: Insyde v: F.09 date: 05/19/2016
CPU: Dual core Intel Core i7-6500U (-HT-MCP-) cache: 4096 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 10367
clock speeds: max: 3100 MHz 1: 499 MHz 2: 499 MHz 3: 499 MHz
4: 499 MHz
Graphics: Card-1: Intel Sky Lake Integrated Graphics bus-ID: 00:02.0
Card-2: Advanced Micro Devices [AMD/ATI] Topaz XT [Radeon R7 M260/M265]
bus-ID: 01:00.0
Display Server: X.Org 1.18.4 drivers: ati,intel,amdgpu (unloaded: fbdev,vesa,radeon)
Resolution: 1366x768@60.00hz
GLX Renderer: Mesa DRI Intel HD Graphics 520 (Skylake GT2)
GLX Version: 3.0 Mesa 12.0.6 Direct Rendering: Yes
Audio: Card Intel Sunrise Point-LP HD Audio
driver: snd_hda_intel bus-ID: 00:1f.3
Sound: Advanced Linux Sound Architecture v: k4.4.0-72-generic
Network: Card-1: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
driver: r8169 v: 2.3LK-NAPI port: 4000 bus-ID: 02:00.0
IF: enp2s0 state: down mac: <filter>
Card-2: Realtek RTL8723BE PCIe Wireless Network Adapter
driver: rtl8723be port: 3000 bus-ID: 03:00.0
IF: wlo1 state: up mac: <filter>
Drives: HDD Total Size: 1000.2GB (4.4% used)
ID-1: /dev/sda model: TOSHIBA_MQ01ABD1 size: 1000.2GB
Partition: ID-1: / size: 901G used: 26G (3%) fs: ext4 dev: /dev/dm-0
ID-2: /boot size: 473M used: 151M (34%) fs: ext2 dev: /dev/sda2
ID-3: swap-1 size: 17.07GB used: 0.00GB (0%) fs: swap dev: /dev/dm-1
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 29.8C mobo: 27.8C
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 296 Uptime: 6 days Memory: 2321.6/15938.3MB
Init: systemd runlevel: 5 Gcc sys: 5.4.0
Client: Shell (bash 4.3.481) inxi: 2.2.35

[Moem]

Hello, welcome, please don't double-post! It seems you may need to read the guidelines again. Thanks!