- calling Jasc/Corel on their free technical support number 0800 376 9271 (info from click here).
- searching their knowledgebase* click here, or
- sending them a query (to send a query you'll need to be registered at the site first: click here to create an account). Good luck, G
*Searching their KB for 'install problem' (in PSP) gave the following result (10 pages) click here*xh&p_lva=&p_li=&p_page=1&p_prod_lvl1=155&p_prod_lvl2=%7Eany%7E&p_search_text=install+problem&p_new_search=1&p_search_type=4&p_sort_by=dflt.