SOLVED Installing Test Font Error



  • When trying to generate a test install I continue to get the following error

    "Failed to generate the font for test install
    Traceback (most recent call last):
    File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ttLib/tables/_h_m_t_x.py", line 100, in compile
    struct.error: argument out of range

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
    File "lib/doodleDelegate.pyc", line 188, in testInstallFont_forWindow_showProgress_option_
    File "lib/fontObjects/doodleFont.pyc", line 300, in generate
    File "lib/fontObjects/doodleLayer.pyc", line 388, in generate
    File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontCompiler/compiler.py", line 149, in generateFont
    File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontCompiler/baseCompiler.py", line 379, in compile
    fontTools.ttLib.TTLibError: 'hmtx' table can't contain negative advance widths


    Installing Jakob Modern Regular failed
    The file does not exist at the specified URL.
    --------------------"



  • 👋

    is the issue solved?
    did you check if you have any glyph with a negative width?


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