I was able to reproduce this with the same configuration: Google Chrome 15.0.874.106 m (latest final version, no beta); CCleaner V3.12.1572.
Here's the steps I took to reproduce the problem:
1. Set CCleaner's Chrome Settings (check the boxs) as follows: Internet Cache, Internet History, Cookies, Download History, Session, Saved Form Information.
2. Start Chrome.
3. Clean a session with Chrome's native cleaner (Tool icon, Tools, Clear Browsing Data: Clear browsing history, Clear download history, Empty the cache, Clear saved Autofill form data). We leave Cookies unchecked so that CCle