I copied the files from the new CPG 1.5.12 into the folder where 1.5.8 was installed. Then I tried to run the update.php and got the following error:
Fatal error: Cannot redeclare class core_udb in /home/ti99er00/domains/ti99ers.org/public_html/cpg/bridge/udb_base.inc.php on line 765
The location is at http://www.ti99ers.org/cpg/.
???
The file got corrupted during upload. Try again.
That didn't help, so I downloaded the file again and reinstalled it. All looks fine now. Thanks! :)
Moving from install to upgrading board and marking as solved.