If something is not working please consult the HIARCS Chess Explorer FAQ page for the product:
In the event you are unable to resolve the issue you can email the HIARCS team
You may also wish to consult the HIARCS chess forum
Any updates issued for HIARCS Chess Explorer will be available from www.hiarcs.com. Information about any updates will be emailed to you and can be reached by using the Help->Check for updates menu option.