I am running Ubuntu 16.04 and found the LFHH module and documentation ready to install when I opened PI. I did the download, closed PI, and did the install...it reported all went well. I exited. Upon starting again, I did not see LFHH in any list of procedures, nor did it appear in the 'install module' option under Procedures. I looked in opt/pixinsight/bin--it is not there. What next?
Thanks,
Alex