Barry,
To help us narrow this down, could you do the following:
- Exit CCS and browse to c:\<your install dir, usuall "ti">\ccsv5\eclipse\p2\ in a windows explorer
- In this folder, browse to org.eclipse.equinox.p2.core\ and delete the cache folder. Also browse to org.eclipse.equinox.p2.repository\ and delete the cache folder.
- Start CCS and go the the Help -> Install New Software dialog. In there, select "Code Generation Tools Updates" as the site to work with.
- Can you select the specific compiler update from the list and see if you are able to install it. If you're still seeing an error, can you post the complete error text here? Note the message box is scrollable and only a couple of lines are displayed by default.
Note you cannot browse the URL from a browser due to the security settings on the server. There should be no problems for CCS with using IE8 and XP.