Good document control practise is that you do not have a constantly named file unless it's iteration is also described.
People will inevitable download these things and then not know what version it is they have. (Ever been accused of misleading ppl only to find they have a 3 year old file they use for reference)?
Relying on a 'change date' field is a poor second best 'control'.
Not criticising Marks bug fix or reasons for change ;-)