I just purchased the Restfull spell book for my alchemist at Belcanzor's shop, and she can learn the spell, but after I scribe the book and look in her spell list, the Restfull spell doesn't appear in her list at all. I did this for my other 3 characters who can cast the spell, with the same results. 8000 gold wasted - I no-saved and quit. Any ideas as to why this bug is happening, and how to get around it?

The Book of Resting teaches the stamina spell, not restfull.

Note, though, that the same Book of Resting does teach Rest All in Wizardry 8. The book even transfers from one game to the other (albeit "expensively"), and changes which spell it teaches.