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The top three reasons we've seen for this, in order, are:

• Some version 2.1 numbers (registered in middle October) were caught in a server switch-over, and will get an invalid message on the upgrade page. These numbers are within the upgrade period, and those people do not need to purchase an upgrade to use version 3.0 unless they are changing the number of users.
• People are mis-typing their serial number.
• People are trying to upgrade LanProjekt’s WinProxy 1.4.

The problem with the switch-over is due primarily to the latency of DNS server changes. It can take several days for DNS changes to ripple through the Internet system and settle out to the new information. Your chances of getting caught 'in between’ varies from location to location and depends upon which ISP gives you DNS services. Things should have pretty much settled by the time you read this.

You don't have to worry about case-sensitivity when typing in your existing serial number, but you do have to get those dashes in there. The most common mistakes are confusing ones and ‘ells’, and zeroes and ‘ohs’. Cut and paste if in doubt.

LanProjekt’s WinProxy is a different product, sold by a different company. We do offer competitive upgrades, but not via the on-line shopping pages. You are welcome to call our sales line (1-888-WinProxy) for details.

The top three reasons we've seen for this, in order, are :-

• People are putting the registration number into a 3.0 Beta version instead of the 3.0 release.
• People are inadvertently putting the registration number into version 2.1 instead of 3.0.
• People are mis-typing the number.

The Beta version will not accept a 3.0 serial number; you need to download the release version from the website and put the registration number in that. (3.0B4a is a typical beta version number, 3.0R1b is a typical release number). The Betas all have a hard-coded timeout that you cannot change, and they will start timing out in late October. The release 3.0 will pick up your current settings from the beta when you install it. The 2.1 version will not accept a 3.0 number. There are several circumstances where you could be inadvertently starting your old 2.1 version instead of your new 3.0 version. You can take a look under ‘Help – About’ to find the version number of the copy you have running, or take a look at the drop-down menus. If the Help drop down doesn't have a tech support link, then it ain’t 3.0.

The registration number form is not case-sensitive, but you do have to get the dashes right. The most common errors are transposed characters, and mistaking letters for their look-alike numbers. Cut and paste if in doubt.

Far and away the most common reason for this is that people are not adding Gateway information to each client machine’s network settings. It's a bit of a pain if you've got a lot of machines, but its simple to do and it's the one part that's crucial to make the NAT and Transparent Proxy work. If you want to use WinProxy’s new DHCP server to assign network info to your client machines, the gateway information will be included with the rest, no muss, no fuss.