Is anyone else having problems with SMath not updating the results of calculations after input parameters are changed? This has been going on for me off and on for the last year maybe. I'm using v1.5.0.9678. Below is a screenshot example. 5628 is an obsolete result that continues feeding the rest of the worksheet. The copied formula to the right of the sheet shows what M and M.max should have after having changed the P.f variable earlier in the worksheet. I have Auto calculation enabled, and I can hit F9 to force a recalculate, but it doesn't help. The only way I can get formulas to update when it does this is to edit the formulas (like changing s to s1, which is invalid, then change it back, which forces a new calculation). Suffice it to say, this renders a math program not only useless if it doesn't show the correct math result, but also dangerous if it's being used for structural design. Manually forcing a recalculation of every formula by editing them is a ridiculous and very time-consuming way of working around this major issue. Has anyone else had this issue or found a cause for it? And is there any hope for a final resolution of it in the program?