After installing IC3 my 16-bit executables fail to run. How do I correct this?

In IC3 (up through Release 4, but now fixed in Release 4a), when the Scala installer installed the key driver, an additional driver component was selected that should not have been. On some systems, this additional component can cause 16-bit executables to fail to run. Since 16-bit executables are quite rare these days, the problem can remain unnoticed for some time. However, the Scala setup executables are 16-bit executables, and on such systems they will no longer run -- they will appear to do nothing, or unpack and do nothing.

To correct this problem, you need to uninstall then correctly reinstall the key driver. The key driver installation program is called HInstall.exe and can be found in the folder where your Scala product was installed, which is often something like:

C:\Program Files\Scala\<Product>

Where C: is the drive the product was installed to, and <Product> is one of ICDesigner3, ICDesigner, ICPlayer, NetManager, NetManagerEnterprise, or ICBroadcastServer.

Proceed as follows:
Remove the key driver by entering this command in the Start Menu Run... dialog:
(but use the correct path for your system)

C:\Program Files\Scala\<Product>\HInstall" /r /kp /alldrv

Reboot the computer.
Re-install the key driver by entering this command in the Start Menu Run... dialog:
(but use the correct path for your system)

C:\Program Files\Scala\<Product>\HInstall" /i /kp