Sorry we missed this originally - we browse the forums as we're able, but we can't guarantee that we'll see everything. However, if you email our
support ninjas, you
are guaranteed a response.
The most likely cause here is that something about the way the wireless network itself is configured that's preventing the two editions of OmniFocus from talking to each other.
If you have someone responsible for administering the network there, they may have to give you permission to sync. (If they're not sure what to do, our support ninjas are happy to work with them.)
For what it's worth, I generally recommend WebDAV sync to customers these days. WebDAV sync means you can sync your devices any time they have access to the internet - the devices don't have to be on the same network, in other words. The technology it depends on is also far less likely to run into network configuration issues like this.
There's a list of free or inexpensive services you can use for WebDAV sync in
this thread; we're also in the process of testing a sync server that our customers can use at no charge. Info on our server is available
here, if that helps...