Well, thanks to you I realised I was experiencing the same trouble. Here is the way I fixed it :
# This is the default font used for the popups. Adjust them accordingly # or even add new ones. DEFAULT = ["VL Gothic", "Verdana", "Arial", "Courier"] IMPACT = ["Impact"] #Pokeymon : here is the new font I added. # The following are the various rules that govern the individual popup # types that will appear. Adjust them accordingly. Here is a list of what # each category does. # Zoom1 The zoom the popup starts at. Values over 2.0 may cause lag. # Zoom2 The zoom the popup goes to. Values over 2.0 may cause lag. # Sz The font size used for the popup text. # Bold Applying bold for the popup text. # Italic Applying italic for the popup text. # Red The red value of the popup text. # Grn The green value of the popup text. # Blu The blue value of the popup text. # Font The font used for the popup text. POPUP_RULES ={ # Type => [ Zoom1, Zoom2, Sz, Bold, Italic, Red, Grn, Blu, Font] "DEFAULT" => [ 2.0, 1.0, 24, true, false, 255, 255, 255, DEFAULT], "CRITICAL" => [ 2.0, 1.0, 24, true, true, 255, 80, 80, DEFAULT], "HP_DMG" => [ 2.0, 1.0, 36, true, false, 255, 255, 255, DEFAULT], "HP_HEAL" => [ 2.0, 1.0, 36, true, false, 130, 250, 130, DEFAULT], "MP_DMG" => [ 2.0, 1.0, 36, true, false, 220, 180, 255, DEFAULT], "MP_HEAL" => [ 2.0, 1.0, 36, true, false, 160, 230, 255, DEFAULT], "TP_DMG" => [ 2.0, 1.0, 36, true, false, 242, 108, 78, DEFAULT], "TP_HEAL" => [ 2.0, 1.0, 36, true, false, 251, 175, 92, DEFAULT], "ADDSTATE" => [ 2.0, 1.0, 24, true, false, 240, 100, 100, DEFAULT], "REMSTATE" => [ 2.0, 1.0, 24, true, false, 125, 170, 225, DEFAULT], "DURSTATE" => [ 2.0, 1.0, 24, true, false, 255, 240, 150, DEFAULT], "DRAIN" => [ 2.0, 1.0, 36, true, false, 250, 190, 255, DEFAULT], "POSITIVE" => [ 2.0, 1.0, 24, true, false, 110, 210, 245, DEFAULT], "NEGATIVE" => [ 2.0, 1.0, 24, true, false, 245, 155, 195, DEFAULT], "WEAK_ELE" => [ 0.5, 1.0, 24, true, false, 240, 110, 80, DEFAULT], "IMMU_ELE" => [ 0.5, 1.0, 24, true, false, 185, 235, 255, DEFAULT], "REST_ELE" => [ 0.5, 1.0, 24, true, false, 145, 230, 180, DEFAULT], "ABSB_ELE" => [ 0.5, 1.0, 24, true, false, 250, 190, 255, DEFAULT], "BUFF" => [ 2.0, 1.0, 24, true, false, 255, 240, 100, IMPACT], "DEBUFF" => [ 2.0, 1.0, 24, true, false, 160, 130, 200, IMPACT],#Pokeymon : look at "BUFF" and "DEBUFF" , I changed the DEFAULT font set by "IMPACT". Somehow it works with this font but not with some others and I can't figure out why but at least, it works! I added comments in the code to explain you what I did. Strangely there are fonts that work and others that don't and I don't know why. Please read also Yanfly's explanation carefully , it explains how to customize the whole thing and it's pretty simple

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