I have just upgraded to version 2.6.2 - and website (Joomla 1.5.26) now showing 500 error. Can you give me link to version 2.5.4 so that I can download and reintall it . I cannot locate that earlier version.

Help appreciated as my website is down.

getk2.org/assets/files/

Thanks William.
When I uninstalled V 2.6.2 I got message that not all K2 plugins removed and I needed to do so manually. I went ahead any and tried to upload earlier version and I get message: 'Error! Could not find an XML setup file in the package'.

Help appreciated as my website is a local news site and I need to get it back up.

my skype is wmjwhitejr
or see my profile for email address
i should be avail today

Appreciate your attention to this.
Unfortunately, I should not have deleted K2 and as a result II have wiped DB tables clean and it looks like I will have to restore website from scratch.