Planning a migration from OES SP2 to OES2 and am undecided whether or not I should use OES2 64bit , or 32bit.

So far I've got a test system up on OES2 64bit, and cannot import printers yet from my production padbtxt.csv file:

Code:
terminate called after throwing an instance of 'OpenWBEM4::CIMException'
  what():  general error (Unable to convert "false" into UInt32)
Aborted
I was thinking about going 64bit to get all the benefits of my fancy new hardware, but when it comes down to it, I want the best code, and the most reliability. Anybody gone down this road before?