sporadic error: failed to process

asked 2012-08-16 13:01:40 +0800

avidD
166 ● 2

Dear colleagues,
every now and then I get the following error message:

org.zkoss.zk.ui.impl.DesktopImpl service:721
SCHWERWIEGEND: [Desktop z_r4i:/index.zul] client error: Failed to process
setAttr
Cannot read property 'defaultView' of undefined (TypeError)

It is displayed in a red box at the top of the screen in our application. The error is not reproducible and occurs maybe once per month given 1-2 hours using the app per day. Has anyone run into this before?

Regards,
David