When you need support regarding Substance Painter, it is always good to share your log file has it give context about your computer configuration.
The log file can be directly exported from Substance Painter by going to the Help menu and then going into the section Support and selecting the Export log item.
If you are unable to launch Substance Painter, you can retrieve the log file manually by going into the following folder :
- Windows: C:\Users\*username*\AppData\Local\Allegorithmic\Substance Painter\log.txt
- Mac OS: Macintosh > Users > *username* > > log.txt
- Linux: /home/*username*/.local/share/Allegorithmic/Substance\ Painter/log.txt
On Mac OS "library" is a hidden folder.
On Windows "Appdata" is a hidden folder.
On Linux ".local" is a hidden folder.