how to install letodms in linux

[sappu]

i just downlaod letodms_Core and letodms_Lucene tar file under letodms/ root dir..........

still getting error
Error
Core letoDMS directory : Not found
=> Current value : /var/www/html/letodms/
=> Suggestion value : /var/www/html/letodms/

what to do now

---

Core letoDMS directory : Not found
=> Current value : /var/www/html/letodms/LetoDms_Core-3.2.0/
=> Suggestion value : /var/www/html/letodms/


Core.php in inside letodms_core-3.2.0 dir....i moved Core.php from thier to root dir of letodms..but now it show a blank page after clicking next