Open Source Document Management System | OpenKM

While i try to preview the any types of files I am getting errors like If i click on pdf document i am getting "Conversion: IO Exception Execution Command :" can any one help me out please.

I am totally new to Openkm and also suggest me some gud beginner tutorials.

P.S: I am using openkm 6.2.2 community. is it required to change the configuration of those files.

send some screenshots of those. thanks

If you do not install openoffice libre office, swftools etc... and do not configure in administration parameters will not get preview running, it's not a trivial task and althought we try explain as details as we can sometimes there're some special cases depending your OS configuration.