Error messages after re-installing webserver.
 

Hello*

I've reinstalled my webserver* I use XAMPP and restored my database and after I did this I'm getting some errors when navigating on my forum:

Code:
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\forum\showthread.php on line 639

Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\forum\showthread.php on line 1041

Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\forum\showthread.php on line 1046

Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\forum\showthread.php on line 1518

Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\forum\showthread.php on line 1523

Any Idea how can I fix this?