Dear All,
A bugs was found in the way vasp.5.4.1.24Jun15 analyses the symmetry of collinear magnetic structures.
A patch (patch.5.4.1.27082015) that fixes this problem can be downloaded from the download portal or our wiki.
Gunzip and apply this patch inside the vasp.5.4.1 root directory:
patch -p1 < patch.5.4.1.27082015
Sorry for the inconvenience,
The VASP team.