Questions about the clustering algorithm MCL may be answered in the mcl FAQ. For other questions open a discussion on the mcl Github page. For issues with the software open an issue instead.
When seeking help regarding running or compiling one of the MCL-edge programs, remember to describe the problem as clearly as possible. This includes (whether it concerns compiling mcl or running mcl programs) a full description of what you did (i.e. the command line statements), what you expected, and what happened (i.e. the screen output or a concise description or example of unexpected contents found in files). Do try to make examples as small as possible.