Two Ubuntu users (Ubuntu 12.04 LTS, Apache 2.2.22, mod_perl) reported that LXR was unable to load its templates. It looks like the current working directory is not set to LXR root directory when the scripts are launched.
Don't know if that was always the case under Ubuntu or if it results from some recent change. May affect all versions of LXR from
Fix is to change template designation in lxr.conf from OS-relative to OS-absolute format. To handle this with the configurator, add %LXRroot%/ in front of all template locations in the HTML section of global.conf.part.