500 error code after installing UNLOQ plugin

Hi, immediately after installing the UNLOQ plugin I get this 500 error code that pops up as soon as I log into wordpress

Any help would be appreciated
Thanks

500 – An Error Has Occurred. Please Check Your Scripts

An error has occurred and the server was unable to complete your request. The server has reported “internal server error” as it it not able to determine the cause of the problem.
The most common reason for seeing this page is because of a website scripting error. Website administrators should check the following:

Incorrect permissions
The top cause of this error is incorrect permissions on a script or directory. Directories that contain web content (including cgi scripts) must be mode 755. CGI scripts must also be 755. PHP scripts outside cgi-bin folders must be mode 644.

Invalid script interpreter
The script interpreter is defined on the first line of the script after the #! and must exist on the server. This is usually perl and needs to be ‘/usr/bin/perl’. If you wish to use php, please use ‘/usr/bin/php5-cgi’. These paths can vary from system to system and it’s important to ensure that they’re correct for this server.

Script uploaded in binary mode
Text files are very slightly different between Unix and Windows platforms. If you upload in ASCII mode, the ftp server will translate the files to Unix mode for you if necessary. If you upload in binary mode, it won’t. CGI scripts are one of the few places on web servers where this difference actually matters.

Script did not output headers
CGI scripts must output HTTP headers. If you’re using PHP, it will do this for you. If you’re using Perl, you must do it yourself or use a helper module to do it for you. You must also ensure that the headers are always the first output generated by the script. It’s not uncommon for test or debugging code to output a message before the headers and that will cause the server to treat the script as broken.

Syntax error in script
This error will be generated if scripts have syntax errors and don’t actually run successfully. You should obtain the relevant interpreter for your script and try to run it before uploading as this is the easiest way to ensure that there are no syntax errors.

Script is trying to use a module not installed on the server
Perl scripts will usually die with an error if a module the script requires is not installed. If you suspect a module you require is not installed, please contact support.

Error in .htaccess
This error will be returned if there is a directive Apache does not understand in the .htaccess file.

What to do if all else fails
If you’ve checked all of these things and can’t fix the problem, our support staff will be able to find out more specific details of the actual problem and give you more detailed information on how to resolve it.

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