Adobe programs are sensitive to font issues, and one, the Titler in Premiere, is the most sensitive. This ARTICLE was written primarily for Titler, BUT translates to PS too. Often, a corrupt, or poorly-designed font will crash Titler, where that same font will usually just fail to display in PS, though it might cause hangs. Tracking down the problem font is outlined in the above article.
However, even if a font is not corrupt, or bad, it just might not display properly in some Adobe programs. I found that Isabelle and Isabella (two different fonts, with similar names) and from several foundaries, just do not display in Photoshop, or Illustrator. They do not crash the program, or cause a hang, but they obviously have an issue, and just will not display. They also do not crash Titler, but do not display.
Other fonts, such as the older DejaVu, installed with OpenOffice, would crash Titler. I do not have that font, but do understand that Oracle has rewritten it, so that it now works OK.
Good luck, and it could well be that your problem font(s) can be replaced by a better one, that has similar characteristics, or can be replaced by the same font, but from another foundary.
Hunt
