Source Code Pro font not loadable, failed to print PDF

Question

I recently updated PTXprint to version 3.0.41, and now I can't print PDF because of this error:

PTXprint [3.0.41] - Error!
Failed to create: ASLat_Default_JON_ptxp.pdf
! Font \idf@nt="Source Code Pro" at 8.0pt not loadable: Metric (TFM) file or installed font not found.
l.38 \font\idf@nt="Source Code Pro" at 8pt
------------------------------------------------------------------------------------------
Cannot find the Font specified. Install it, restart PTXprint and try again
or change the font to one that is already installed. More details below.

Font: 'Source Code Pro' was found in Style settings for marker(s): zpmkr

I've tried changing the font for `zpmkr` to Arial or any other generic fonts, but then the error changed to this:

PTXprint [3.0.41] - Error!
Failed to create: ASLat_Default_JON_ptxp.pdf
! Font \idf@nt="Source Code Pro" at 8.0pt not loadable: Metric (TFM) file or installed font not found.
l.38 \font\idf@nt="Source Code Pro" at 8pt
------------------------------------------------------------------------------------------
Cannot find the Font specified. Install it, restart PTXprint and try again
or change the font to one that is already installed. More details below.

Font: 'Source Code Pro' specified in Fonts+Scripts was not found

Now this is where it gets confusing. I'm using the default configuration that is Charis SIL, but somehow it thinks that Source Code Pro is being used here.

Any ideas?

Comments

I've upgraded to 3.0.43, and the issue is still there. The warning gives more information though, but I still don't know what to do.

PTXprint [3.0.43] - Error!
Failed to create: ASLat_Default_JON_ptxp.pdf
! Font \idf@nt="Source Code Pro" at 8.0pt not loadable: Metric (TFM) file or installed font not found.
l.38 \font\idf@nt="Source Code Pro" at 8pt
I wasn't able to read the size data for this font,
so I will ignore the font specification.
[Wizards can fix TFM files using TFtoPL/PLtoTF.]
You might try inserting a different font spec;
e.g., type `I\font<same font id>=<substitute font name>'.
------------------------------------------------------------------------------------------
Cannot find the Font specified. Install it, restart PTXprint and try again
or change the font to one that is already installed. More details below.

Font: 'Source Code Pro' specified in Fonts+Scripts was not found

Answer 1

That font should already be installed when PTXprint is set up. Could you check in C:\Program Files\PTXprint\fonts and see if you can locate SourceCodePro-Regular.ttf  Try (re-)installing it to see if it solves your issue. If not, we can dig deeper.

Comments

Yes, the font is already installed on Windows. Also I can find the .ttf file in the directory you mentioned. I've tried uninstalling and reinstalling (install for all users) the font, but the issue persists.