Thanks for responding. I am using the most recent linkselect version (Date: 2009-07-13 * Rev: 1.2.07)
I have read and re-read the documentation and pretty sure doing it correctly. I do have two selects (dropdowns) and both seem to get initiated correctly. I can use any another option in the API such as .linkselect("val"), .linkselect("disable", boolean) or .linkselect ("object"). The only one that throws the error is .linkselect ("replaceOptions", options)