In order to customize Crystal Reports used with Spire, it's recommended to upgrade Crystal Reports 2016 to at least Service Pack 3 plus all three Service Pack 3 patches.  Although, the easier alternative is to simply upgrade Crystal Reports to at least Service Pack 4 (which is outlined below).

Step-by-step guide

  1. Browse to (if the page is no longer available, search Google for "Crystal Reports service pack").
  2. Click the relevant link (i.e. "Get service packs").
  3. Set the filters for "Crystal Reports" and "SAP Crystal Reports 2016" and then click Search.
  4. Traverse the pages of available downloads until you find "SAP Crystal Reports 2016 SP04 Update".
  5. Click the SP04 link to download the file (save it to your hard disk).
  6. After the download is complete, find the file where you saved it to and right-click it, then select "run as administrator".
  7. Follow any on-screen installation instructions.