Hum, so I followed you advice and wiped out my .julia. Took a bit of time, but after red-downloading and recompiling everything, I get the same error unfortunately.
The registry is up to date as far as I can tell.
However, I think I managed to narrow down a bit the error.
If I remove further lines form MassXYZ and do
@mtkmodel MassXYZ begin
@parameters begin
m
v_0[1:3]
s_0[1:3]
end
end
it fails the same but if I remove the 1:3 and leave v_0 and s_0 as scalars, it compiles fine.