Boolean union

Hello there,

I am attempting to union a cluster of cubes that have been generated in grasshopper (Version .8).

I am using rhino Version 4 SR8 1-april-2010

The only way I seem to be able to do this is to select a small number and then boolean them (repeat a million times).

In many occasions this fails and I am left with clusters that wont join.

Any suggestions would be GREATLY appreiceated.

Thanks in advance,

Gordy