Your HeatMapsCreate one Add Missing or incorrect trackerId parameter for the plugin. Click here for examples of 'Expressions file' and 'File with color names for columns' Example files: Expressions file: expres.filtered.ALL.txt Example file with 5 samples shown in clolumns and 4 probes shown in rowsX01005 X03002 X04006 X08001 X08011 ... 907_at 7.05504714571076 6.36553156477933 7.29972071766107 7.14530005271249 6.55837603123432 ... 266_s_at 9.04532654574716 8.76519861663292 5.92977166821942 8.77115180638761 9.29292631362242 ... 39428_at 8.98247983341952 8.54297171270327 6.61260671679085 8.91120876066951 8.96764296927797 ... 34878_at 7.08507005637603 6.47085852132802 4.98581312587213 6.58554529486256 6.80912944758598 ... ... File with color names for columns: colorsForColumns.txt File corresponding to the previous example file with 5 samples and 2 colorsColumn Group X01005 3 X03002 3 X04006 2 X08001 3 X08011 3 ... Missing or incorrect trackerId parameter for the plugin.