CEON not working for me in 1.3.9h

OKies so as mentioned above I upgraded from 1.3.8a to 1.3.9h

I thought I may have broke something in one of the files required for the MOD to work.

I d/l from the CEON website 3.8.0 and compared the files.

I also compared to the RAW 1.3.9h files etc... all is good.

I can see the module installed in the admin area. I can use the tool and exclude files etc and save with NO errors.

However, as soon as I enable CEON the home page loads a 404 error.

A couple thing to mention.

The site is currently installed in a sub directory. (testing purposes)

when the new 1.3.9h site fails.

mywebsite.com.au/mystore

404 error loads inside cart.

If I click on ANY link in my menu it loads the LIVE (1.3.8a) site addressing ??

mywebsite.com.au

is my LIVE site addressing and this works no issues. (This also has CEON installed and working)

If I have CEON OFF in the NEW 1.3.9h cart the cart works no issues.

Any ideas on where I go from here?