Hi thete, today i started the auto upgrade procedure but at the momento of unzip the file the script return this "Note: A non well formed numeric value encountered in /home/kazama82/public_html/jinkazama82it_igd/inc/_ext/pclzip/pclzip.lib.php on line 1846" I immediately stopped the procedure, it seems a not good note.
At the moment I've installed locally the 6.9.4 version and before today I never read that note.
This relates to the memory limit you have it seems
You could check the code to see if it conforms to the above and your memory limit to ensure it is with acceptable parameters.