Noticed this week that when using the Python import script to import recent Glyphs 2 files, it skips over composites. It is OK when I open and safe the file with Glyphs 1. It is also OK with Glyphs 2 files saved about a month ago.
Comparing the files in a text editor, to see what is different: In the old files all components have a transform, in the new files the first component of a composite does not have a transform.
I also ran into this problem (I think — it happens with all Glyphs 2.0 files) and downloaded the latest version (july 11, 2015) of the scripts, but I still get this error message for all component characters:
There was a problem reading the components for glyph: ibreve