@ Mark: Thank you for your response. So, if I understand correctly, I need to move the contents of each folder found in the update package into the corresponding folder within the forum software on the server, overwriting the existing content. After that, I have to click the "Continue" button. @ Stuart: Thank you for your response. This is the content of the log in the folder upload/logs: <?php exit; ?> Tue, 10 Nov 2026 12:08:14 +0000 Exception::0 Could not list the files in the zip #0 /home/ssangyon/public_html/forum/admin/upgrade/extract.php(643): Extractor->extract() #1 {main} This in the error log in the upgrade folder: [10-Nov-2026 12:08:14 Europe/London] PHP Warning: unpack(): Type V: not enough input values, need 4 values but only 0 were provided in /home/ssangyon/public_html/forum/system/3rd_party/pclzip/pclzip.lib.php on line 4394 [10-Nov-2026 12:08:14 Europe/London] PHP Warning: Trying to access array offset on false in /home/ssangyon/public_html/forum/system/3rd_party/pclzip/pclzip.lib.php on line 4397 Any idea what caused this? Moste regards, Walter