I am trying to compile my iso, and I keep getting an error that Comctl32.dll cannot be found on my Windows install disc. I have XP home SP1. Any ideas?

Its a plugin that is causing this. Look at the proceding lines of log to the error. You shoudl see what plugin is having the issue. Either fix the INF for the plugin (to correctly load comctl or just disable the plugin.

Or copy comctl32.dll to the plugin directory from your running XP system. I am surprised that that file is not on your CD. Its on the XP Pro CD.