nlapiLoadRecord fails for non-Administrator roles

We are experiencing a problem with the nlapiLoadRecord() function when it is invoked by the Field Changed Function in the client script of a Customer form for non Administrator roles (works fine for Administrators). The following code results in an error ReferenceError:_funcname is not defined.

    var customStatusId = nlapiGetFieldValue(fieldName);
    var customStatusRecord;
    try {
        [INDENT]customStatusRecord = nlapiLoadRecord('customrecord35', customStatusId);[/INDENT]
    } catch(error) {
        [INDENT]alert("ERROR LOADING: " + error);[/INDENT]
        [INDENT]return false;[/INDENT]
    }

customrecord35 is a custom record type we have defined. The Use Permissions checkbox is un-checked and no permissions are defined in the permissions tab.

If I check the