Hi
I install K2 (K2_v2.1_build20090909.zip) on my joomla 1.5.14 and plugins: all video and simple image gallery(free), but:
plugin simple image gallery is ON and info of K2 say not installed. Why?

Web Server Apache/2.2.9 (Mandriva Linux/PREFORK-12.3mdv2009.0)
PHP version 5.2.6
MySQL version 5.0.84
GD image library 2.0 or higher
Multibyte string support On
Upload limit 8M
Memory limit 32M
Open remote files (allow url fopen) Да
Simple Image Gallery Plugin Not installed
Simple Image Gallery PRO Plugin Not installed
AllVideos Plugin Installed