Filesize issues.
Using Jamroom
There is a Quota setting in the ACP at:
ACP -> SYSTEM CORE -> CORE -> QUOTA CONFIG -> MAX UPLOAD SIZE
Its probably that.
eg, one of them is:onClick
{jrCore_list module="jrSomething" no_cache=true}
<VirtualHost *:80>
ServerAdmin 0@somewhere.com
ServerName yoursite.com
ServerAlias www.yoursite.com
DirectoryIndex index.php index.html index.htm
DocumentRoot /home/vagrant/sites/yoursite.com/public_html
<Directory /home/vagrant/sites/yoursite.com/public_html/>
Options Indexes FollowSymLinks MultiViews
AllowOverride All
Require all granted
</Directory>
ErrorLog /home/vagrant/sites/yoursite.com/logs/error.log
LogLevel error
CustomLog /home/vagrant/sites/yoursite.com/logs/access.log combined
</VirtualHost>