Jeff Gates writes: "Adobe Type Reunion does not work with Photoshop 5.0. I called Adobe tech support and they confirmed this. They said that the new type engine on Photoshop 5 accesses the fonts directly rather than through the Mac operating system."
Frank Heller confirms this: "I was informed that the PS 5.0 type engine had been changed to the point where ATR could no longer support the ability to preview fonts in their actual typeface. Adobe has been rather tight-lipped about a fix."