So naturally my Force.com IDE install will have some problems because it needs to go off and fetch resources from around the web.
Firstly the old site (http://www.adnsandbox.com/tools/ide/install/) seems to work better than the new one. It looks like plenty of people are aware of this.
My solution for getting the rest of the install working was to track down random versions of the files Eclipse was complaining about and drop them in the plugins directory. Eclipse has an install option "Update my installation to be compatible with the items being installed" which will update these files if they're out of date. But before you can even select this option, you have to have some version of the file in the right location.
The files I needed were:
- org.apache.log4j - copied it from my old eclipse helios install
- org.eclipse.update.ui - not in helios install, found on java2s.com
The first time I tried to install, I got another error. I tried again, and I got past it and was asked to restart Eclipse to complete installation. So it looks like the first attempt was partially successful which allowed the second attempt to complete.
