Well, if I remember, in the EFnet IRC channel #ti (or maybe it was #omnimaga?) some people reported bugs with MathPrint or fractions, but I forgot what they were. All I know is that they occured without running any BASIC or ASM prog. TI seems to be starting doing the same mistake as in 2001: they don't test their stuff hard enough before releasing it. Look at the first 83+Silver Edition OS (1.13), you could crash your calc WITHOUT ASM!