SQL error on cash receipt - missing chart_id

I have just updated to 2.6.10 and I noticed in  Dieter's announcement the 
strong advice not to repost an invoice (which I have done in the past) and to 
use the cash receipt link instead.

When I try to use the cash receipt link I get the following error 

DBD::Pg::db do failed: ERROR: syntax error at or near "," at character 114
Error!
INSERT INTO acc_trans (trans_id, chart_id, transdate,
 amount)
 VALUES (10313, , '14/05/2006',
 1480.5 * 1)
ERROR: syntax error at or near "," at character 114

I have almost certainly done something stupid on the setup of my accounts.  
Does anyone have an idea what it is and how I can fix it ?

Thanks

Stephen