Dear Andrade, The error messages look scary but I wouldn't worry too much about them. The relate to MATLAB and not SPM, and only concern the GUI. Some comments online suggest that installing the libcanberrra-gtk* packages might solve the issue. Best regards, Guillaume. On 08/10/2019 21:09, Rene Andrade wrote: > It does work for opening the spm and PET/VBM but it still shows both errors. > > Gtk-Message: 16:31:51.297: Failed to load module "canberra -gtk-module" > [1003/163155.390616:INFO:context.cpp(159)] Using multi-threaded message loop for Linux > > > Click in "PET/VBM" > > (MATLAB:11853): Pango-CRITICAL **: 16:35:20.461: pango_font_description_from_string: assertion 'str != NULL' failed > > (MATLAB:11853): Pango-CRITICAL **: 16:35:20.461: pango_font_description_get_family: assertion 'desc != NULL' failed > > (MATLAB:11853): Pango-CRITICAL **: 16:35:20.461: pango_font_description_set_family: assertion 'desc != NULL' failed > > (MATLAB:11853): Pango-CRITICAL **: 16:35:20.461: pango_font_description_get_size: assertion 'desc != NULL' failed > > (MATLAB:11853): Pango-CRITICAL **: 16:35:20.461: pango_font_description_set_size: assertion 'desc != NULL' failed > > It all seems to work allright but I´m afraid something wrong might come up from all these errors or warnings. > > Sincerely, > Andrade. > > -- Guillaume Flandin, PhD Wellcome Centre for Human Neuroimaging UCL Queen Square Institute of Neurology London WC1N 3BG