500 error

Hello,

I have a problem.

When i install a plugin on my website, is causes a 500 server error. I can’t get in my admin anymore, so i had to remove the plugin with my FTP program.

So i can’t install any plugins, because i get that 500 error, and that error come`s up with every plugin that i tried to install.

An example, i tried to install W3 Total Cache because i wanted to speed up my website, but than an 500 error..

The error that i see is:

[quote]HTTP-fout 500 (Internal Server Error): Er is een onverwachte voorwaarde gevonden toen de server het verzoek wilde uitvoeren.[/quote]

Loosely translated:

[quote]HTTP Error 500 (Internal Server Error): An unexpected condition found when the server would execute the request[/quote]

How can i fix this? I want to install some plugins!

The link of the website is: http://www.112-uitgeest.nl (Dutch)

Thanks!