White screen in two sites. Help, please.

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I have two sites with Concrete5,http://www.aquiladante.com.ar andhttp://www.puertoruiz.com.ar. Yesterday morning i was working in one of them (aquiladante) and visit the other. In the afternoon i see only a white screen in both. Puertoruiz showed first log on page, and after log on only the white screen. Does anybody can help me solve this?
phpinfo in aquiladante.com.ar/test.php and puertoruiz.com.ar/test.php.
Other site in same ISP,www.www.pescarenparanacito.com.ar... is working fine.
Sorry for my english.
Thank You.

 
ijessup replied on at Permalink Reply
ijessup
Did you update c5 recently?
Oscarcito replied on at Permalink Reply
No. Two weeks ago I have installed the version 5.4.1.1 on both sites. In puertoruiz.com.ar did nothing in the last sesion, and I add and ordered some pages in the sitemap in aquiladante.com.ar. Both sites has only the admin user, and can only be seen by registered users. Thanks for answering.
Oscar
ijessup replied on at Permalink Reply
ijessup
Something is definitely not right. Even tools can't be accessed, nor is die('Access Denied') getting triggered.

My guess is that there is a cache error somewhere. Delete all the files inside ~/files/cache
Oscarcito replied on at Permalink Reply
I have erased both cache, but everything remains the same. Thanks for your attention.
Oscarcito replied on at Permalink Reply
Resolved. After clearing the browser's cache, i remembered having risen by ftp the easy_news add-on. Copy it to local, and generated an error. Deleted it on both sites, clean the cache again and obtain access to both sites.
Thank You.
Oscar