The grid panel is being populated via data from my server using a store that accepts json formatted data. In some cases this particular field above is null.
Ever since I set the useNull config to true, I am receiving the following repeating error in firefox's firebug:
An invalid or illegal string was specified
The same code in IE does not throw an error.
This seems to just be a nuisance but I'd rather not see it continuously pop up. I dont believe anything is configured incorrectly, I'd just rather not see a value in my panel rather than the default of 0 if this field is null. I could also configure this field to be a String instead, but I'd rather not do this.
Please let me know your thoughts on this error I am getting from firebug