Startup error : error in /usr/local/bro/share/bro/base/utils/files.bro, line 32

Hi,
I am getting this startup error : - Any idea how to debug this ?

[BroControl] > start
starting bro …
warning: cannot send mail
bro terminated immediately after starting; check output with “diag”
[BroControl] > diag
[bro]

Bro 2.2-135
Linux 3.13.0-24-generic

==== No reporter.log

==== stderr.log
error in /usr/local/bro/share/bro/base/utils/files.bro, line 32: unknown identifier unescape_URI, at or near “unescape_URI”

==== stdout.log
unlimited
unlimited
unlimited

==== .cmdline
-i eth0 -U .status -p broctl -p broctl-live -p standalone -p local -p bro local.bro broctl broctl/standalone broctl/auto -b

Did you make any changes to the scripts that Bro scripts with?

  .Seth