The TI-30X Pro MultiView introduced in september 2010 in Europe was withdrawn in october 2010 as it was giving wrong results.
Reintroduced in may 2011, it was strangely renamed TI-36X Pro in America.
A new bug with wrong results has been discovered, affecting both models:
For more accurate information and emulator screen captures, check TI-Planet:
http://tiplanet.org/forum/viewtopic.php?t=8297