Upgrade Beta4 to RC1 went wrong - forum not more accessible

[asiaGPS]

My Beta4 forum with lot of mods has been running well.
Now I upgraded to RC using the package for upgrade with mods.

I haven't de-installed all mods before as mentioned in another thread.

After updating the database during the upgrade process, in the next step I am receiving an error message /Sources/Subs-Package error on line 1440.
That's it, stopped there....

Now trying to re-upload my existing Beta4 installation and import the database backup.
Grrrr

[karlbenson]

if (strlen($path) == 0)
      trigger_error('parse_path(): There should never be an empty filename', E_USER_ERROR);

hats the line in the file.  Somewhere there was an empty path?

[Rumbaar]

I wasn't aware you could upgrade from BETA 4 -> RC1 via the Package Manager?