"This page is not available..." message on another device

1. Make sure you both have the same Maximum Channel Size settings for your channels.

It is possible you increased yours to 250KB one day for testing purposes and forgot to change it back.

2. Make sure all of your other channel settings are the same.

Maybe you have Follow Off-Site Links turned off and your co-worker has it turned on, so he is detecting a "leak" to another website that you are not seeing. If in doubt, unsubscribe and re-subscribe to your channel to get the default settings that your customers would normally see.

3. The other thing you should check is that you have similar devices.

Remember, graphic size will vary significantly from, say, a Palm III to a Pocket PC device. If you have a site with a lot of graphics and you are pushing the limit on your 4-gray mobile device, you will probably go over the limit on a color device.