Strange behaviour of ANS ?

[Joe Horn]

You might be running into the strange fact that there are two different Ans variables: a Home Ans, and a CAS Ans. They can have different values. Home's Ans is changed by every operation in Home (including calls to CAS functions from Home), but CAS's Ans is only changed by operations performed within CAS view.

Try performing these operations in the specified view in the order shown:

CAS: 1+2 --> 3
CAS: Ans --> 3
Home: 4+5 --> 9
Home: Ans --> 9
Home: CAS(Ans) --> 3 (CAS's Ans is still 3)
Home: Ans --> 3 (the call to CAS from within Home changed Home's Ans)

Is this related to what you are seeing?