Trying to create a 3D figure and keep getting this error!!

>> waterfall (kadcp.day_num,kadcp.mab,kadcp.echo1') Warning: Error updating Patch.

 Enforcing Delaunay constraints leads to unstable repeated
 constraint intersections.
This may be due to near coincident intersecting constraints
or near duplicate points.

%kadcp.day_num is 17824x1 double

%kadcp.mab is 1x44 double

%kadcp.echo1 is 17824x44 double

waterfall(kadcp.day_num,kadcp.mab,kadcp.Magvel')

I have used the same code for the above, with the same dimensions and it worked perfectly.

Please help!