On some machines, one of my ActiveX controls stops installing. For instance, if I remove the control from a machine, and then go back to the web page with the control, it asks me if I want to install it, but then doesn't install it.

Then if I go back to the page again, and it still asks me if it wants to install, but then again, still doesn't install it.

This is purely random on some machines, but the problem is now this control will no longer work on these machines.

How can I fix this?