buffer error messages

hi all,

Can anyone help me with this...?

latest max/msp/jitter
latest OSX
Ti PB

I have a large patcher containing subpatchers as both bpatchers and
abstractions.
There are 3 buffers sitting inside abstractions, with arguments to
set the buffer name etc.

I'm trying to get it running on another laptop, and have temporarily
copied across all of my max folders (though I re-installed max &
jitter, to be safe) and am running the patcher either in max in demo
mode, or as a collective with runtime (which is what i am ultimately
aiming to do once I've ironed the kinks out).

I've started getting a message, when I try to load sounds into a
buffer, that says:

error: buffer~ ; can't read file now

it doesn't always do it on every buffer, and it doesn't always do it
first time I try to load.
Anyone have any idea what that might mean?

I don't know if this is connected, but I'm using a number of
tap.tools externals as well, and I'm getting an error message for one
of them ...

error: tap.buffer.snap~: invalid buffer

these are [tap.buffer.snap #1] objects inside abstractions. It looks
like the buffer name (one, two etc) isn't getting down to the object
in time (is that possible?); although none of the other buffer
related objects are having a problem.
I realise this is one for Tim Place, but thought I'd add it in in
case anyone thinks this might be the cause of the problem. (And yes,
I'm going to try removing them to see if that makes any difference -
but I really want to be able to use these).

thanks

David