version hwpmc kernel module & pmc library not match

[binto]

Hi,

i run command for kernel profiling purpose:

pmcstat -S instructions -O /tmp/sample.out

and i get error:
pmcstat: ERROR: Initialization of the pmc(3) library failed: No such file
or directory

I've compile my FreeBSD 6.3-PRERELEASE kernel in  i386 machine :
device  hwpmc
options HWPMC_HOOKS

myquestion:
- any suggestion to fix that error?
- how to find what version number of the hwpmc in my machine?
- does pmc have version too?

Thanks
Binto