If the mimetype is of type text, then the icons are not found
or displayed in gnome Files. No application except apt seems
to define text based mime types. And for apt it does not work
either. So I reverse.
Categories=GTK;Science;Math;
# TRANSLATORS: You must keep all ";" - also at the end of line.
Keywords=statistics;analysis;spss;
-MimeType=application/x-spss-sav;application/x-spss-por;text/x-spss-sps;application/x-spss-spv
+MimeType=application/x-spss-sav;application/x-spss-por;application/x-spss-sps;application/x-spss-spv;
StartupNotify=false