External does not load in collective/standalone (mac)

Hi,

I have a couple of externals that have only a main function and then load bundles within the main bundle, and these don't seem to work in a collective or an standalone.

I had assumed that the issue was one where the internal bundles were not found, but this doesn't appear to be the stumbling block. In fact, the main routine of the wrapper external doesn't appear to be getting called at all(I'm posting to the max window straight away - in MaxMSP this works, in a collective/standalone I see nothing).

The object appears greyed out (I understand that - no class has been registered), but there is no message about the object being missing, so it appears that the external is being bundled into the collective, loads (as far as Max is concerned), but I never get a function call to the main routine. I'm at a loss as to how to debug further if I am not getting a function call....

Any ideas?

Thanks

Alex