when installing the theme i get a blank page

[george_z3n]

When installing the theme i get a blank page right after activate the theme, also after that i get this error when trying to open modules:

[PrestaShop] Fatal error in module file :/home/www/solosuelos.com/modules/snssmartbloghomelatestnews/snssmartbloghomelatestnews.php:
require_once() [function.require]: Failed opening required ‘/home/www/solosuelos.com/modules/smartblog/classes/SmartBlogPost.php’ (include_path=’/home/www/solosuelos.com/tools/htmlpurifier/standalone:.:/usr/local/php5.3/lib//php’)

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