AppliedFont not working for a certain font

Question

Hello all,
a small but strange problem here. that only exists with a certain font. a shortened version of the script (as it pertains to the discussion) is here. It loops through paragraph styles looking for certain values and changes them:
                    else if (appliedFont.fontFamily== "Myriad Pro"){
                        appliedFont= "Yakout Linotype";
                        if (fontStyle== "Regular"){
                            fontStyle= "Light";}
                        else if (fontStyle== "Semicondensed"){
                            fontStyle= "Light";}
                        else if (fontStyle== "Semicondensed Italic"){
                            fontStyle= "Light";
                            skew= -15;}
                        else if (fontStyle== "Italic"){
                            fontStyle= "Light";
                            skew= -15;}
                        else if (fontStyle== "Semibold"){
                            fontStyle= "Bold";}
                        else if (fontStyle== "Semibold Semicondensed"){
                            /fontStyle= "Bold";}
                        else if (fontStyle== "Semibold Semicondensed Italic"){
                            fontStyle= "Bold";
                            skew= -15;}                       
                        else if (fontStyle== "Semibold Italic"){
                            fontStyle= "Bold";
                            skew= -15;}
                        else if (fontStyle== "Bold"){
                            fontStyle= "Bold";}
                        else if (fontStyle== "Bold Italic"){
                            fontStyle= "Bold";
                            skew= -15;}
With it i get the error that the system cannot find the font i want. It even wont work in this case:
app.selection[0].appliedFont = "Yakout Linotype";
HOWEVER, if I select a piece of text and change that piece of text to Yakout Linotype using indesigns GUI and THEN run the script, the script works without a flaw.
anyone know why a font would have to be present in a document for the script to call upon it. Or why that doesnt seem to be the case with other fonts, ONLY Yakout Linotype. Thanks!
Edit: "Yakout Linotype" is the fontFamily, Ive tried using fullName and fullNameNative.

Answer 1

I'm guessing: does "Yakout Linotype Regular" exist as a font style? If not, that's the problem -- you are trying to change the Myriad Pro in "Myriad Pro Regular" to Yakout, but it has no "Regular", and at that point the script fails. You can change both the font and the font style in one go by using "Yakout Linotype\tLight" as the argument to appliedFont -- with a [Tab] between the font family and style name.