unwanted boxes on mhx import to blender

I designed a character in MH nightly 2011-10-27 and exported it as mhx, unchecking the blender2.4 and the clothes options in the gui but leaving everything else unchanged.
It seemed to work OK, no problems reported.
I then imported into blender 2.60a - again, no problem reported, but when I looked at the cahracter she was standing in "concrete blocks" (these also showed up in render). A little investigation revealed that these blocks were located in "custon shapes" in blender's outliner window, and went under names like "foot box" (or something like that).
I had a similar problem once before, but am not sure how I resolved it - probably by waiting for a new version
I'd like to know what causes it - I thought maybe incompatible versions, but no error was reported.
Another thing is that the skin appeared patchy in places
Any ideas on this?
Thanks,
/Gary
It seemed to work OK, no problems reported.
I then imported into blender 2.60a - again, no problem reported, but when I looked at the cahracter she was standing in "concrete blocks" (these also showed up in render). A little investigation revealed that these blocks were located in "custon shapes" in blender's outliner window, and went under names like "foot box" (or something like that).
I had a similar problem once before, but am not sure how I resolved it - probably by waiting for a new version

I'd like to know what causes it - I thought maybe incompatible versions, but no error was reported.
Another thing is that the skin appeared patchy in places
Any ideas on this?
Thanks,
/Gary