Can't add domain alias!

[tuxStyle]

I created a new user:
bits.activestyle.ca

And now i want to add an alias:
files.activestyle.ca to point in the same place.
Is not working.
It doesn't matter what i enter in the alias field, i get everytime the same error.

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I managed to create the alias from the reseller account (why can't i add an alias from the user account?).

files.activestyle.ca is alias for bits.activestyle.ca and moutn point is /

The problem: when i go to http://files.activestyle.ca/ the page from http://activestyle.ca/ is loaded not http://bits.activestyle.ca/

What i'm doing wrong?
And why i can't create aliases as user?

Later edit: something is definitely wrong.
Now http://bits.activestyle.ca/ points to http://activestyle.ca/

Is a bug somewhere
Who can help me find it?

Another EDIT:

I regenerated the config files, http://bits.activestyle.ca/ is working but http://files.activestyle.ca/ still points to the wrong page.

I don't get it...
When i installed ispCP in may (from SVN) everything worked flawlessly ... now i have lot of issues