🚀 go-pugleaf

Every time I open an existing file, I receive the following message: 
"Document named XXX.fm uses unavailable fonts. To reformat the document using available fonts, click OK'." 

I then get a new dialogue box that tells me: 
The "CG Times" Font is not available. 
  It will be replaced by "Times". 
The "CG Times Italic" Font is not available. 
  It will be replaced by "Times Italic"." 

I go into the document, find all the instances where the "unavailable fonts" are located and replace them with available fonts. However, I then have to convert my files to PDF format, and when I change the printer, I get the message that some of my fonts will be changed...from then on, I'm back where I started..."Unavailable fonts" message!! 

Any suggestions or fixes would be greatly appreciated!