[SL] Open POS Invoice throws error

[James M. <ja...@ja...>]

*I keep getting this error when I try re-open an open POS Invoice. I 
don't know if it's a problem with my setup or if there are some issues 
with my environment.


**DBD::Pg::db do failed: ERROR: operator does not exist: character 
varying < integer
LINE 2: WHERE expires < 1204510587
^
HINT: No operator matches the given name and argument type(s). You might 
need to add explicit type casts.
*


    Error!

*DELETE FROM semaphore
WHERE expires < 1204510587
ERROR: operator does not exist: character varying < integer
LINE 2: WHERE expires < 1204510587
^
HINT: No operator matches the given name and argument type(s). You might 
need to add explicit type casts.

**My environment
Ubuntu 8.04
SQL-Ledger *Version 2.8.13
Postgres 8.3.0-1