XF 1.3 Getting this error after install

[DomainArchitect.com]

I just installed, made no real changes and already I am showing this error in the logs:

ErrorException: Fatal Error: XCache: Cannot create shm - Unknown:0
Generated By:Admin, A moment ago
Stack Trace
#0 [internal function]: XenForo_Application::handleFatalError()
#1 {main}
Request State
array(3) {
["url"] => string(84) "http://url.com/forums/admin.php?_css/&css=filter_list&dir=LTR&d=1397760508"
["_GET"] => array(4) {
["_css/"] => string(0) ""
["css"] => string(11) "filter_list"
["dir"] => string(3) "LTR"
["d"] => string(10) "1397760508"
}
["_POST"] => array(0) {
}

 

[Andrej]

You posted a thread on this previously (with answers).