Cache error warning

[PeteW1959]

I am in the process of setting up a new store with 6.0.8.

I have 2 stores, a development store and what will become my production store.

I am getting on both store fronts, seemingly at random, a warning message:-

Warning: filesize(): stat failed for /var/sites/c/ccdev.xxxxxxxx.co.uk/public_html/cache/10bff.sql.empties.cache in /var/sites/c/ccdev.xxxxxxxx.co.uk/public_html/classes/cache/file.class.php on line 168

This appears at the top of the page, over the top of my skin. Everything seems to be working OK, the layout doesn't get corrupted by the message being there, and I have only seen it on the storefront, not the admin pages. As soon as I move to another page, the message disappears.

I am using a self-modified Kurauto Purple skin.

Any ideas?

[bsmither]

If it is at the top of the page, I can conclude that when this error is triggered, CubeCart is waking up between executing:
ini_set('display_errors', true);
in ini.inc.php, and
ini_set('display_errors', false);
in the Debug class that gets instantiated in controller.index.inc.php.

Check to make sure that eventually, CubeCart switches off 'display_errors'.

CubeCart's management style of the cache suggests that stat errors are very common. (Even so, they should not be displayed.)