Subcategory page suddenly directed to nonexistant directory

[Snostar]

I'm using joomla 2.5, Virtuemart 2.0 and a template from virtuemarttemplates.net.

www.joomla25.meadowsmedical.com
if you click on <online store> it takes me to the icons of my main categories.  They all pointed to a page of icons for each of their subcategories, then suddenly they are all empty.
My host came back with this error:


[Tue Feb 19 07:08:36 2013] [error] [client 72.10.62.12] File does not exist: /home/70506/domains/joomla25.meadowsmedical.com/html/templates/flexi, referer: joomla25.m...egory_id=2&Itemid=490

"Flexi"  is another template from virtuemarttemplates.net in which I did not buy, of course that file doesn't exist.
Why would this path suddenly change?  Where and how do I fix this?