<html> <head> <meta content="text/html; charset=windows-1252" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> Hi Benito, Your first source is the obm-sync log files, located at /var/log/obm-tomcat/obm-java.log. You'll find the error there. You can post the file here so that we can help you. Regards, <pre class="moz-signature" cols="72">David DOLCIMASCOLO Resp. Equipe OBM / OBM Team Lead Resp. Adjoint Equipe OpenPaas / OpenPaas Team Deputy ------------------------------------------- +33 6 76 20 62 28 ------------------------------------------- 80 rue Roque de Fillol 92800 Puteaux FRANCE ------------------------------------------- Message envoyé avec OBM, La messagerie Libre : <a class="moz-txt-link-freetext" href="http://www.obm.org/">http://www.obm.org/</a></pre> <div class="moz-cite-prefix">Le 09/09/2015 17:06, Benito Chamberlain a écrit : </div> <blockquote cite="mid:55F04AE1.3080008@itcsnam.com" type="cite">Struggling with Thundebird and obm calendar syncing. Here's what I have Thunberbird 38.2.0 Lightning 4.0.2 Obm-connector 4.1.0 I have the mail and obm-sync server setup, I can connect and synchronize my calendar and address books. However , whenever I invite any attendee and I choose notify, I click on sync and immediately I get : " Error during synchronization " If I add an event and don't invite any attendees , it syncs to my calendar successfully. Also I have looked at the users Right management under Calendar (webinterface) , and added the other user to read , write access. No difference. When I invite via the web interface , it gets synced to my Thunderbird/obm calendar successfully. Just doesn't work when I invite from withing Thunderbird. Can you please give advice on where to start looking for the problem? Or could it be a bug in the tbird / lighting /obm plugin ? Kind Regards Benito </blockquote> </body> </html>