Minor Error with RC 4
 

On boot I'm getting an error:

can not open us-two-alt.map

I only noticed this with RC 4, wasn't paying attention on earlier RC's.

Not sure how to resolve this, if it is even a problem or just a warning of some sort.

There's already a thread regarding RC4. Don't open a new thread like this.

I don't think that is a standard or stock keyboard map. I suspect you grabbed that keyboard map from here:

Configuring the Right Alt Key The Same As The Left Alt Key

Thanks, for your help and providing the link.