Creation backup error

[HaMiL]

Hello. I need help. Sorry from my bad English
When i create Backup from control Panel i see error:

Error in BackupState.doActivityRunner()
Traceback (most recent call last):
File "/usr/local/psa/admin/share/agent_runner/agent_runner.py", line 98, in doActivityRunner
newState = self.doActivity()
File "/usr/local/psa/admin/share/agent_runner/agent_runner.py", line 391, in doActivity
errtxt = runAgent(self, self.session)
File "/usr/local/psa/admin/share/agent_runner/agent_runner.py", line 258, in runAgent
cmd.spawn()
File "/usr/local/psa/admin/lib/python/subproc.py", line 238, in spawn
proc.run()
File "/usr/local/psa/admin/lib/python/subproc.py", line 193, in run
BaseSubprocess.run(self)
File "/usr/local/psa/admin/lib/python/subproc.py", line 177, in run
self.wait()
File "/usr/local/psa/admin/lib/python/subproc.py", line 197, in wait
BaseSubprocess.wait(self)
File "/usr/local/psa/admin/lib/python/subproc.py", line 187, in wait
raise NonzeroExitException(self, os.WEXITSTATUS(status))
NonzeroExitException: was finished with exit code 2

In agent-runner.log

Can't locate auto/DBI/connect.al in @INC (@INC contains: . /usr/local/psa/lib/perl5/site_perl/5.8.8 /usr/local/psa/lib/perl5/site_perl/5.8.8/mach /usr/local/lib/perl5/5.8.8/BSDPAN /usr/local/lib/perl5/site_perl/5.8.8/mach /usr/local/lib/perl5/site_perl/5.8.8 /usr/local/lib/perl5/site_perl /usr/local/lib/perl5/5.8.8/mach /usr/local/lib/perl5/5.8.8) at Db/DbiBackend.pm line 43

OS: FreeBSD 6.2
Plesk 8.4
/tmp mount with only 'rw' options.
CHMOD probable good.

How to fix this problem? May be update to 8.6?
P.S: Google and other — not positive result.

 

[HaMiL]

Okay. Work! It is fine I'am happy
Update to 8.6 and backup system - work fine.
P.S: The error was in Perl lib's