Gilles asked:
GH> Does it mean that the 244 version I'm using is not valid too ?
It's not invalid, per se. But it is old, unsupported, and not under
development; and it contains known bugs.
GH> BTW, one little thing I came across using a text editor is to use
GH> two different potentials for an element on different
GH> crsytallographic sites. Is that automatic in 2.5 ?
No, in that regard 2.5 is the same as 2.44. But a choice of three
different schemes for assigning unique potentials *is* a feature of
3.0,
which is new, supported, and under-development. (Sadly, it also
contains known bugs, but that's life in the software development
biz. ;-)