I have made some minor changes to OpenType Features Editor, and the new version is now available here: http://www.timrolands.com/More/Downloads.aspx.
I fixed some issues with the autogeneration of ligature feature rules and identified some additional fixes and enhancements to pursue.
For those who don't know, OpenType Features Editor is a little tool I made to generate a features file from information in an AFM file. So you can export the AFM for a font, generate a *.fea file and import that back into your font development software. It's Windows only at the moment, but I have plans to make it available as a web-based tool as well.
Please let me know if you encounter any issues with this release or have any other feedback. Thanks!