CalDav - Modification failed in Thunderbird Lightning

[gangsterwagen]

When trying to import backuped calendar in Thunderbird Lightning there is an error "Modification failed".

I searched for solution but can't found working one.

Has someone similar issue?

[Koen Breeman]

Hi Guys

I've got exactly the same problem. When I try to create a CalDAV calendar and try to link/add it using TB with the Lightning add-on, I receive the modification failed error when using my own credentials. This only works with the admin credentials. I tried to edit the map properties, but this doesn't work. So I presume it has something to do with the setup of the apache server, but I don't know how to fix it.

Regards

Koen

[Koen Breeman]

Hi Guys

I solved it by changing the advanced settings of the shared folder, this has an effect on the WebDAV properties.

However when I now add something to the lightning calendar it doesn't show up on my iphone and vice-versa. In fact it takes quite a while for the iphone to even connect to the CalDAV server.

I've checked the forum and it looks like this is a bug in the synology firmware, am I correct?

Regards

Koen