Can't locate object method "host_port"

Hi.

I have a problem when I reload a form in RT (4.2), I can load this form 
but when reload de form he don't work, The message error is:

     "An internal RT error has occurred. Your administrator can find 
more details in RT's log files."


In the log file:

[29652] [Thu May 29 12:01:40 2014] [error]: Can't locate object method 
"host_port" via package "URI::_generic" at 
/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web.pm line 1496, <GEN54> 
line 192.

Stack:
   [/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web.pm:1496]
   [/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web.pm:1567]
   [/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web.pm:1647]
   [/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web.pm:385]
   [/usr/local/rt-4.2.0/share/html/autohandler:53] 
(/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web/Handler.pm:211)
[29646] [Thu May 29 12:02:16 2014] [error]: Can't locate object method 
"host_port" via package "URI::_generic" at 
/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web.pm line 1496, <GEN62> 
line 192.

Stack:
   [/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web.pm:1496]
   [/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web.pm:1567]
   [/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web.pm:1647]
   [/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web.pm:385]
   [/usr/local/rt-4.2.0/share/html/autohandler:53] 
(/usr/local/rt-4.2.0/sbin/../lib/RT/Interface/Web/Handler.pm:211)


Thanks a lot.

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