"In version 0.99.6884, membrane animations do not work."
What do you mean: all those linked Bessel animations don't work [1 year old]
from the Smath Matlab library mwbesselj(N,x) ? Is that so ?
Does it mean part or all mwXXX library 6884 is zap ?
That would a damned bug. All my Fourier documents would be red by switching 6179 => 6884

"What do you mean: all those linked Bessel animations don't work [1 year old]
from the Smath Matlab library mwbesselj(N,x) ? Is that so ?"
Uni, the problem with the Bessel function is not related. The problem is in
the F (u, v) function that CreateMesh uses.Look at the attached file

https://en.smath.com/forum/resource.ashx?a=15089&b=2

In the function F (u, v) for animation, I used not two, but four arguments F (u, v, t, delta).
The problem is that the latest version does not allow increasing the number of arguments above two.

Plugin updated. Try now.

Edited by moderator 03 February 2019 14:14:05(UTC)  | Reason: marked as Solved

Update as advised by Viacheslav.
What do you mean does not evaluate on-line ?
It evaluates the work sheet.