Google Chrome on Ubuntu 11.04 Natty - Your profile could not be opened correctly

For me this was due to ghost chrome processes still running. Close chrome, and type:

ps aux | grep chrome

I had output like this:

16660 ?        00:00:15 chrome
16666 ?        00:00:00 chrome
16668 ?        00:00:00 chrome
18159 ?        00:00:11 chrome
18165 ?        00:00:00 chrome
18167 ?        00:00:00 chrome

Then kill em all!!! e.g. to kill the first one (process id 16660), type:

kill 16660

Then when you restart chrome, it should be able to load your profile properly again.