Hi, Something is providing you with an invalid date. Are you using the current version of Koha? I did a google search and found the following page: http://irc.koha-community.org/irclog/koha/2011-12-02 Search for Date::Calc::Add_Delta_Days() in that page and you will see someone had a similar problem. -Joe- On Mon, Apr 9, 2012 at 1:12 AM, Khurram <kk.ahmad@gmail.com> wrote:

Hi

I have successfully installed koha on ubuntu.

But when i try to login from front end, it gives following error :

-----------------------------------------------------------------------------------------Software error:

Date::Calc::Add_Delta_Days(): not a valid date at /usr/share/koha/opac/cgi-bin/opac/opac-user.pl line 115.

For help, please send mail to the webmaster (webmaster@riphah-desktop), giving this error message and the time and date of the error.

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