Playback event error

[marrandy]

PClinuxOS - 2009 with zm from synaptic
Linux localhost 2.6.26.8.tex3 #1 SMP Mon Jan 12 04:33:38 CST 2009 i686 Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz GNU/Linux
zm v1.23.2

So I have Two events, 0.99 secs and 2.23 secs. I click on the events, select all, view, the first one plays, then I get

"An error has occurred and this operation cannot continue.
For full details check your web logs for the code 'C9F9C3' "

I look in /var/log/httpd/error_log and see:-

"[Fri Jul 10 11:42:50 2009] [error] [client 127.0.0.1] SQL-ERROR(C9F9C3): select E.* from Events as E inner join Monitors as M on E.MonitorId = M.Id where E.StartTime <= '2009-07-10 11:34:51' and ( E.Id in (36%2C37) ) order by E.StartTime desc limit 100, referer: http://localhost/zm/index.php?view=even ... e=1&play=1"

Of course, I have no idea what this means ?

ADD: Funnily enough, if I play the first one, and then select 'play all' , they do play successfully.