Error loading module ''

Hello, guys!

I hope it is in the right forum.

Recently we ended up with interesting issue:
We wanted to set up fax for asterisk.

Running on AsteriskNOW 3.0.5, 64bit, Asterisk 11.10.2
res_fax_digium -
It is a free fax license (was chosen for test purposes)

The license is at the /var/lib/asterisk/licenses/FFA-helllllooooo.lic and is registered.
Ran benchfax, it suggested athlon flavor, however there is no athlon flavor in 64x, thus we used generic.

So, we ended up with this:

[2014-09-08 15:18:53] WARNING[4074]: loader.c:439 load_dynamic_module: Error loading module '': /usr/lib64/asterisk/modules/ undefined symbol: _ast_mem_backtrace_buffer [2014-09-08 15:18:53] WARNING[4074]: loader.c:918 load_resource: Module '' could not be loaded.

Is that because of the wrong module version?

Any help would be extremely appreciated.
We are able to provide any kind of info, if it will help to solve the issue.