hello, I installed iPrice Calculator ver. 1.1.7 on Joomla 3.1.1 and I can not create categories or items because I get this error: Fatal error: Class 'IpricecalcHelper' not found.
On the front end instead I get this: Deprecated: Call-time pass-by-reference Has Been deprecated in / home/www/.../components/com_ipricecalc/helpers/html.php on line 30
Thank you very much if you can help me solve this problem. Thanks in advance