X10hosting - Web server software ERROR

[beisan-net]

When I was trying to install a script to my web (which it is very hard to be done)
I faced this little problem when I started the install file

the message was:

HTTP Error 500 - Internal server error

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, webmaster@beisan.x10hosting.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.2.8 (Unix) mod_ssl/2.2.8 OpenSSL/0.9.8b mod_mono/1.2.6 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.beisan.x10hosting.com Port 80

Then I did a little search on google and this the first page http://www.checkupdown.com/status/E500.html

the pages content:

HTTP Error 500 - Internal server error​

Introduction

Your Web server encountered an unexpected condition that prevented it from fulfilling the request by the client (e.g. your Web browser or our CheckUpDown robot) for access to the requested URL.
This is a 'catch-all' error generated by your Web server. Basically something has gone wrong, but the server can not be more specific about the error condition in its response to the client. In addition to the 500 error notified back to the client, the Web server should generate some kind of internal error log which gives more details of what went wrong. It is up to the operators of your Web server site to locate and analyse these logs.
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500 errors in the HTTP cycle

Any client (e.g. your Web browser or our CheckUpDown robot) goes through the following cycle when it communicates with your Web server:

• Obtain an IP address from the IP name of your site (your site URL without the leading 'http://'). This lookup (conversion of IP name to IP address) is provided by domain name servers (DNSs).
• Open an IP socket connection to that IP address.
• Write an HTTP data stream through that socket.
• Receive an HTTP data stream back from your Web server in response. This data stream contains status codes whose values are determined by the HTTP protocol. Parse this data stream for status codes and other useful information.

This error occurs in the final step above when the client receives an HTTP status code that it recognises as '500'.
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Resolving 500 errors - general

This error can only be resolved by fixes to the Web server software. It is not a client-side problem. It is up to the operators of your Web server site to locate and analyse the logs which should give further information about the error.
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Resolving 500 errors - CheckUpDown

Please contact us (email preferred) whenever you encounter 500 errors on your CheckUpDown account. We then have to liaise with your ISP and the vendor of your Web server software so they can trace the exact reason for the error. Correcting the error may require recoding program logic for your Web server software, which could take some time.
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I didn't wrote my cat didn't wrote it it is in an independent source CheckUpDown

So can you solve this little prob for me
the installation url is
http://www.beisan.x10hosting.com/xemail?Change_Settings
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Edit:
Sure I did just like the installation guide

 

[leafypiggy]

what the hell do you have on your site...your whole friggin site is a 500...