New versions of older sheets

[Fred_Kohlhepp]

Just copied from today's Twitter feed:

" Soon, a new worksheet library titled ”Roark’s Formulas for Stress & Strain” will be available for purchase, and it’s built only for Prime 4.0."

We bought Roark's e-book long ago when Mathcad was still in single digit releases; it still opens in Mathcad 15.

Are we now expected to pay again for the same information, possibly with new errors?

[nas0k · Accepted solution]

You betcha!  No different than those of us who've paid annual maintenance getting the latest updates; Prime 4.0 sounds like it was worth the money spend (I haven't updated yet, haven't seen the advantage to do so).

[LucMeekes]

There was previous discussion about Roark's here: MathCAD Prime 3.0 & Roark Toolkit, possible?

Apparently they don't translate well from Mathcad to Prime. Unfortunately...

[VladimirN]

Fred Kohlhepp wrote:

.... We bought Roark's e-book long ago when Mathcad was still in single digit releases; it still opens in Mathcad 15.

Are we now expected to pay again for the same information, possibly with new errors?

That's right.