start module failed and report opcode failure

Dear Experts,
I have two ejabberd server and want them to be a cluster.
One server has erlang version R15B01 while another is R15B02.
I have a custom module called mod_global_roster_writefile.erl
It works fine in the server with R15B01.
When I use the erl and recompile in another server(R15B02), the error log show that:
=ERROR REPORT==== 2012-10-10 09:54:52 ===
beam/beam_load.c(1365): Error loading module mod_global_roster_writefile:
use of opcode 153; this emulator supports only up to 152

How can I fix this? Thanks.
Regards,
Cato