Upgrade Signal for Windows from version 4.x to 4.09
If you do not have a correctly installed copy of Signal 4 for Windows, the upgrade will not happen.
Full documentation is available as .pdf files, if you need them immediately!
For Signal itself, use Signal4.pdf 3.0M bytes and for Signal scripting, use Sig4Scr.pdf 1.8M bytes.
When the form is sent, you can start the down-load.