Backing up & Upgrading

[Kerozene]

Hi guys, i have photopost 5.5 installed and want to upgrade to latest version.
Can i do the upgrade directly ? Or should i install a middle version ?

Also, when trying to backup i get these errors:

Warning: filesize() [function.filesize]: stat failed for /home/clubber/DB-Fotos/GAB_ads.sql in /home/nclubber/public_html/fotos/adm-misc.php on line 1895
Warning: GAB_ads.sql is 0 bytes or did not get created.
Warning: filesize() [function.filesize]: stat failed for /home/clubber/DB-Fotos/GAB_cats.sql in /home/clubber/public_html/fotos/adm-misc.php on line 1895
Warning: GAB_cats.sql is 0 bytes or did not get created.
Warning: filesize() [function.filesize]: stat failed for /home/clubber/DB-Fotos/GAB_stats.sql in /home/clubber/public_html/fotos/adm-misc.php on line 1895
Warning: GAB_stats.sql is 0 bytes or did not get created.
Warning: filesize() [function.filesize]: stat failed for /home/clubber/DB-Fotos/GAB_temp_stats.sql in /home/clubber/public_html/fotos/adm-misc.php on line 1895

Thanks

[Chuck S]

Make sure you have the proper full server path to a backup directory you create thats 777 permissions

As far as upgrading you would upload everything except the 2 config files and install file

You then run the upgrades from 5.5 forward once.