LAMMP 1.7.3 and CodeIgniter

[eluser]dunicorn[/eluser]
I have been working on different web projects with codeigniter such as www.jaara.biz, www.eduedge.blossomhillschools.com e.t.c .... for the past one year. But most of my development was done on my windows machine with XAMMP 1.7.1 .... but switching this same project to my Linux machine with LAMMP is bringing out errors ....

Deprecated: Assigning the return value of new by reference is deprecated in /opt/lampp/htdocs/www.blossomhills.com/system/codeigniter/Common.php on line 130

Deprecated: Assigning the return value of new by reference is deprecated in /opt/lampp/htdocs/www.blossomhills.com/system/codeigniter/Common.php on line 136
A PHP Error was encountered

Severity: 8192

Message: Function set_magic_quotes_runtime() is deprecated

Filename: codeigniter/CodeIgniter.php

Line Number: 60
A PHP Error was encountered

Severity: Warning

Message: require(/opt/lampp/htdocs/www.blossomhills.com/system/libraries/URI.php) [function.require]: failed to open stream: No such file or directory

Filename: codeigniter/Common.php

Line Number: 116

Fatal error: require() [function.require]: Failed opening required '/opt/lampp/htdocs/www.blossomhills.com/system/libraries/URI.php' (include_path='.:/opt/lampp/lib/php') in /opt/lampp/htdocs/www.blossomhills.com/system/codeigniter/Common.php on line 116

can somebody tell me what's wrong???