[Isomorphic]

Yes, 2.2 is very old, go ahead and upgrade to a nightly.

[gilcollins]

Yes, 2.2 is very old, go ahead and upgrade to a nightly.

I've upgraded to the latest but the issue is still there same thing.

Is it possible that you can send me a small test case of the bare minimum and the data your entering so I can test it with the exact same case?

The testcase I submitted also had the same issue.

More information:
I'm running this from MyEclipse IDE in development mode, browser is FF 3.6.12

[Isomorphic]

Ok we see the problem.
If you replace this:

Object start = startKeycodeDate.getValue();
if(start != null) {
    tmp.setAttribute("startdt", start);
}

with this:

Date start = (Date) startKeycodeDate.getValue();
if(start != null) {
    tmp.setAttribute("startdt", start);
}

(for both start and end, obviously), the problem goes away.
Basically you need to call ListGridRecord.setAttribute(String attr, Date value);, not ListGridRecord.setAttribute(String attr, Object value);

[gilcollins]

Ok we see the problem.
If you replace this:

Object start = startKeycodeDate.getValue();
if(start != null) {
    tmp.setAttribute("startdt", start);
}

with this:

Date start = (Date) startKeycodeDate.getValue();
if(start != null) {
    tmp.setAttribute("startdt", start);
}

(for both start and end, obviously), the problem goes away.
Basically you need to call ListGridRecord.setAttribute(String attr, Date value);, not ListGridRecord.setAttribute(String attr, Object value);

This worked thank you!