Here's an interim reply - just away to an early appointment.

I downloaded the i686 32 bit version - 1.4 gigs. Took me three
attempts to get it, download very slow and timed out me. However
final attempt OK after nearly eight hours. Burned with K3B on the
Mepis slot of my triple boot desktop on a DVD. Works perfectly
tho' as the Chakra folk warn, there are still some bugs to find and
a slow burn is recommended.

Will look at your ISO when I get home later in the morning. Its
currently 7 am in N.Z.