I guess we have some lyx2lyx conversion routines problem (from 2.2 format).
Load lib/fonts/test/stmary10.lyx: LyX: Bad integer `\font_tt_scale' [around line 25 of file /trash/lyx_tmpdir.pycDEaV11132/Buffer_convertLyXFormatI11132.lyx current token: '\font_tt_scale' context: ''] BufferParams::readToken(): Unknown token: 100 P
