<SOLVED> Blank page after successfully installing Prestashop

[wt]

Hi there, I successfully installed Prestashop after numerous attempts.

However i get a blank page when I go to the default page. I turn on 'display error', it says

"Parse error: syntax error, unexpected '.' in D:\inetpub\vhosts\yong.my\tiam\test\config\defines.inc.php on line 28"

I read somewhere that I should do the following:

replace row:
define(’PS_ROOT_DIR‘, realpath($currentDir.’/..’));

with your real directory:
define(’PS_ROOT_DIR‘, ‘C://directory’);

but what shall I put in ?