Calculated Fields in Report

I've created a calculated field in report designer that runs fine on our test server but throws a control script error on our production server. The versions of Essentials and SL Viewer are the same. The fields values are from a datalink to an MDB file.

<Field Name="firstNameCalc" Formula="(FIRST_NAME.Trim().StartsWith(&quot;%&quot;) ? FIRST_NAME.Trim() : (FIRST_NAME.Trim().StartsWith(&quot;C/O&quot;) ? FIRST_NAME.Trim() : (FIRST_NAME.Trim().Contains(&quot;PROPERTY&quot;) ? FIRST_NAME.Trim() : &quot;&quot;)))" FieldType="String" />