I actually figured a way to fix the problem. The trouble came from having some pfb fonts in my /Library/Fonts. These were the file names:
ucrb8a.pfb, ucrro8a.pfb, uhvr8a.pfb, utmb8a.pfb, utmri8a.pfb, ucrbo8a.pfb, uhvb8a.pfb, uhvro8a.pfb, utmbi8a.pfb, uzdr.pfb, ucrr8a.pfb, uhvbo8a.pfb...