Installing Tinyportal to 1.1.6 error

[doctor_pin]

Link to my site: http://www.greekrenaultclub.gr
SMF version: 1.1.6
TP version: 0983
Theme name and version: Classic
Related Error messages:

I try to upgrade TP for 1.1.6 and I get the message

Fatal error: require() [function.require]: Failed opening required '/var/www/vhosts/greekrenaultclub.gr/httpdocs/forum/Packages/temp/./tp_install.php' (include_path='.:.:') in /var/www/vhosts/greekrenaultclub.gr/httpdocs/forum/Sources/Packages.php on line 552

[G6Cad]

www.simplemachines.org hold the answers to question related to the package manager.
A hint is to look for permission issues.