I have my AbanteCart setup with the main store and additional domains.  I made an error in working on configuration, and pointed the Store Detail - Store URL and Secure Store URL to the domains, but without including the default domain.  In other works, I changed Store URL from httpCOLON//wwwDOTdomainDOTdefaulDOTcom/ to httpCOLON//wwwDOTdomainDOTcom/ and made the same mistake for https. 

Then I was working in the System tab, and tried to set the Error Log Filename for each domain with a unique name.  [This might have no bearing on the problem.]

There were other settings that might have contributed to the problem, but now I cannot correct what I guess is the source of the problem.  On the Store Details tab, if I try to Select a Different Store than default, it goes immediately to an error webpage.

httpsCOLON//defaultDOTcom/HTTPS_SERVERindex.php?rt=setting/setting/details&store_id=2&active=details&s=abanteadmin
Not Found

The requested URL was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

I am not certain if the Store URL and Secure Store URL settings being wrong are the cause, but I cannot even get access in order to change them.

Is there a file I can text edit on the server to set the Store URL and Secure Store URL to see if it will resolve the problem?  I have been working on this for a few hours, and am considering restoring from backup that was made three days ago.  I will lose some work that I would rather not lose.  Also, it would be better to be able to recover, so that I can have better confidence in not losing data in the future from something where I can't figure out how to recover.

Please help, if you can.