Possible Windows misconfiguration? Many "(Warning) filemtime(): stat failed" errors

[Retrific]

I have a fresh install of 1.6.1.0 on a Windows server, and am getting many warnings with regards to filemtime stat failures:

 

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\Media.php: 

268","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs\themes/default-bootstrap/css/grid_prestashop.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blocksocial/blocksocial.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\Media.php: 

268","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs\modules/blocksocial/blocksocial.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blockfacebook/css/blockfacebook.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1289","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blockfacebook/blockfacebook.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/js/modules/blockfacebook/blockfacebook.js"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blockcms/blockcms.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\Media.php: 

268","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs\modules/blockcms/blockcms.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blockcontactinfos/blockcontactinfos.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\Media.php: 

268","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs\modules/blockcontactinfos/blockcontactinfos.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blockmanufacturer/blockmanufacturer.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\Media.php: 

268","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs\modules/blockmanufacturer/blockmanufacturer.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blockmyaccount/blockmyaccount.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\Media.php: 

268","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs\modules/blockmyaccount/blockmyaccount.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blockpaymentlogo/blockpaymentlogo.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\Media.php: 

268","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs\modules/blockpaymentlogo/blockpaymentlogo.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blockstore/blockstore.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\Media.php: 

268","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs\modules/blockstore/blockstore.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blocksupplier/blocksupplier.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\Media.php: 

268","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs\modules/blocksupplier/blocksupplier.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/homefeatured/css/homefeatured.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/productpaymentlogos/productpaymentlogos.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\Media.php: 

268","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs\modules/productpaymentlogos/productpaymentlogos.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/themeconfigurator/css/hooks.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1289","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/themeconfigurator/hooks.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/themeconfigurator/css/live_configurator.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1289","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/themeconfigurator/live_configurator.css"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/js/modules/themeconfigurator/js/live_configurator.js"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1289","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/js/modules/themeconfigurator/live_configurator.js"

"08 Aug 2015 10:22:55","C:\Inetpub\vhosts\... ...\httpdocs\classes\controller\FrontController.php: 

1287","(Warning) filemtime(): stat failed for C:\Inetpub\vhosts\... ...\httpdocs/themes/default-bootstrap/css/modules/blockcmsinfo/style.css"

 

Is this caused by a misconfiguration of the server?

 

I would be most grateful for any help with this issue.