Hi, Stephan, with your changes on font loading code, app_server won't launch anymore. if I make this: if( /* <<<<<<<<<<----------- !fontserver->SetSystemPlain(DEFAULT_PLAIN_FONT_FAMILY, DEFAULT_PLAIN_FONT_STYLE, DEFAULT_PLAIN_FONT_SIZE) || */ <<<<<<<<<<----------- !fontserver->SetSystemPlain(FALLBACK_PLAIN_FONT_FAMILY, DEFAULT_PLAIN_FONT_STYLE, DEFAULT_PLAIN_FONT_SIZE)) { printf("Couldn't set plain to %s, %s %d pt\n", DEFAULT_PLAIN_FONT_FAMILY, DEFAULT_PLAIN_FONT_STYLE, DEFAULT_PLAIN_FONT_SIZE); } if( /* <<<<<<<<<<----------- !fontserver->SetSystemBold(DEFAULT_BOLD_FONT_FAMILY, DEFAULT_BOLD_FONT_STYLE, DEFAULT_BOLD_FONT_SIZE) || */ <<<<<<<<<<----------- !fontserver->SetSystemBold(FALLBACK_BOLD_FONT_FAMILY, DEFAULT_BOLD_FONT_STYLE, DEFAULT_BOLD_FONT_SIZE)) { printf("Couldn't set bold to %s, %s %d pt\n", DEFAULT_BOLD_FONT_FAMILY, DEFAULT_BOLD_FONT_STYLE, DEFAULT_BOLD_FONT_SIZE); } if( /* <<<<<<<<<<----------- !fontserver->SetSystemFixed(DEFAULT_FIXED_FONT_FAMILY, DEFAULT_FIXED_FONT_STYLE, DEFAULT_FIXED_FONT_SIZE) || */ <<<<<<<<<<----------- !fontserver->SetSystemFixed(FALLBACK_FIXED_FONT_FAMILY, DEFAULT_FIXED_FONT_STYLE, DEFAULT_FIXED_FONT_SIZE)) { printf("Couldn't set fixed to %s, %s %d pt\n", DEFAULT_FIXED_FONT_FAMILY, DEFAULT_FIXED_FONT_STYLE, DEFAULT_FIXED_FONT_SIZE); } ... then it works. Note that I have the tree up-to-date and I'm testing under R5. I'm surprised I write this email... this doesn't happen on your system? Thanks, Adi.