We just tried to install K2_v2.3 on a Joomla 1.5.20 with the latest version of RT Solar Sentinel on GoDaddy.  When we tried to install K2, the installer page went blank and the installation never was completed, now we don't have access to our backend and the website's frontend.  Always displays blank pages on both sides.We then went to phpMyAdmin and there was nothing created referring to K2, no K2 tables added and in the components tables there's nothing for K2.We then access the File Manager and K2 folder under components inside administrator was empty.  The com_k2 folder under components have its files.  When we deleted both com_k2 folders and have access to our backend again.What do we have to do to fix this issue?Thanks in advance.

Is the RT template k2 friendly?
Have you installed other components with success?
Get a fresh k2 install package to use.
Before you try to reinstall k2, just on a hunch, switch to a default joomla template, enable error reporting to highest,
install k2 and rule out template issues first.