LetoDMS 1.8.1 Patch

[administrator]

We are not able to release the new version of LetoDMS 1.8.1 Patch due to

Language error

when we install it...

Warning: Cannot modify header information - headers already sent by (output started at /home/letodms/public_html/demo/languages/English/lang.inc:498) in /home/letodms/public_html/demo/inc/inc.Authentication.php on line 26

but if we install LetoDMS 1.8.1 Patch with LetoDMS 1.8 Language file it works fine .

so we are trying to figure out what is the issue

Thanks

LetoDMS Group.