Some files are not allowed to open and pixelated picel

I try to open some files and it loads for a moment and it closes automatically without giving any warning, which if they manage to open, in the properties of the brushes only the first 5 work correctly, from then on the preview looks like a black rectangle and when scratching it looks pixelated and then a line appears but without its own characteristics.

The characteristics of my computer are:
Windows 10 Home
Processor: Intel (R) Core ™ i7-8750H CPU @ 2.20GHz 2.21 GHz
8 GB RAM (7.88GB Usable)
554 GB Available and free 238 GB solid disk
Intel (R) UHD GRAPHICS 630
NVIDIA GeForce GTX 1050 Ti

Hello doncel2d,

Can you check in your PC settings to see if Harmony is using your Intel UHD Graphics card or your GTX 1050 Ti?

If you open your Nvidia Control Panel (which can be accessed by right-clicking on a blank space on your desktop then selecting it) and then look at the top menu, you should be able to see “Desktop”. After selecting that, you should see the option for “Add ‘Run with graphics processor’ option to Context Menu” which you should then select.

After that, go back to your Harmony.exe file and right-click it, go to “High-performance NVIDIA processor” and then select it.

After that, try opening Harmony and let us know if it works better!

It worked perfectly, thanks