Hey,

I don´t know wether it´s my mistake, or a bug. But after trying to open my font in Glyphs.app via the “Edit with …” Button and reopen it in RoboFont I get this alert:

— Alert —
Importing UFO with quadratic curves.

RoboFont will convert TrueType splines to splines with 2 offcurve points.
—

… and after pressing “OK” i get this error:

— Error–
The document “[…].ufo” could not be opened. The file isn’t in the correct format.

Traceback (most recent call last):
File “lib/doodleDocument.pyc”, line 215, in _loadFont
File “lib/doodleDocument.pyc”, line 93, in _convertSplines
File “/Applications/RoboFont.app/Contents/Resources/lib/python2.7/defcon/objects/contour.py”, line 433, in drawPoints
File “lib/pens/convertSplinesPen.pyc”, line 31, in addPoint
File “lib/pens/convertSplinesPen.pyc”, line 66, in _checkQuads
TypeError: ‘NoneType’ object is not subscriptable
—

Even if I try to open an older version of my font (which I edited with RoboFont only) I get this Alert-Error now.

Could you explain what the first alert actually means? (I can give you further Infos, if you need)

Do you have an idea how to solve the error?

P.S.: I´m still able to open the ufo-file with Glyphs.app. But some (round) curves look disastrous in there now …