HTTPS return blank pages (pages outside CI work)

[eluser]Joakim_[/eluser]
Hi.

I just installed a SSL certificate on my server. However when I try to view a HTTPS page in CI, it returns a blank page. With HTTP it works. Other pages outside CI works with HTTPS. Also, if I enter a wrong HTTPS URL in the CI directory it shows the CI 404 error file, so I assume it's just the controllers that don't work?

I tried to change the base url to https with no luck. Can the problem be with the .htaccess file?

It looks like this:

Code:

# REMOVE INDEX.PHP FROM ADDRESS.
RewriteCond $1 !^(index\.php|assets|robots\.txt)
RewriteRule ^(.*)$ /index.php?/$1 [L]

Any help are very much appreciated, thanks!