[jQuery] .get(0) fails in 1.2.5

[jQuery] .get(0) fails in 1.2.5


Hi there,
Noob.. and first post. Thanks for helping:
When using jquery 1.2.1 this call
var task = $("#task_"+checklist_id+"_"+task_id)[0];
or
var task = $("#task_"+checklist_id+"_"+task_id).get(0);
both return: [object HTMLTableRowElement]
which is correct. (we are appending rows to a table...)
But in 1.2.5 - same calls return: undefined
which then makes my next function,
$.data(task, "name", id); fail.. w/ message "elem has no properties"
Any ideas? Thanks.