The https://github.com/potfit/potfit page provides an issue tracker which may also be used to submit general questions, help requests or bug reports.

When asking for help please provide as much information as possible. This includes:

• Used operating system
• Used potfit version
• Which compiler has been used with which math library
• Which potfit options are enabled (include the compile command if usure)
• Error message or detailed description of what is wrong/not working

If possible you may also provide the used input files, which usually helps a lot.