[TYPO3] Difficulties with tt_products

[Tapio Markula]

Hi

I don't get tt_products properly working
  http://62.142.86.253/index.php?id=717

1) link to single view is *empty* (href="")

2) basket throws
Warning: 
includecalcscript(typo3/ext/tt_products/pi1/products_comp_calcScript.inc) 
[function.includecalcscript]: failed to open stream: No such file or 
directory in 
/srv/www/htdocs/typo3/ext/tt_products/lib/class.tx_ttproducts_pricecalc.php 
on line 68

Warning: includecalcscript() [function.include]: Failed opening 
'typo3/ext/tt_products/pi1/products_comp_calcScript.inc' for inclusion 
(include_path='/usr/share/php') in 
/srv/www/htdocs/typo3/ext/tt_products/lib/class.tx_ttproducts_pricecalc.php 
on line 68

class.tx_ttproducts_pricecalc.php exists in /lib/ folder