Errors when disabling task list

[mitar]

Only Today and week are enabled (because this is my default view), but others are disabled.

[alice-mkh]

Which ones are disabled? Screenshot?

[mitar]

Almost all buttons disabled. See that I cannot even move between weeks.

[alice-mkh]

Do you have a calendar set up?

[mitar]

Yes. Multiple of them.

I am realizing there is more to this. I think all the issues I am having (like current time line not moving, #27) are probably the same issue. The issue is that it looks like the interface is disabled:

• the buttons in the toolbar are disabled
• if i right-click on the list of calendars, I cannot add or remove a calendar
• current time line is not moving
• I can add events, but I cannot delete them

All this works when this add-on is disabled.

[alice-mkh]

Ok. What are your versions of Thunderbird, Lightning and Lightbird?
Also, is there anything suspicious in error console? Because otherwise all I can say is "works for me".

[mitar]

Thunderbird: 52.5.0
Lightning 5.4
Lightbird 0.7.1

OK, I figured out why buttons were disabled. Because I had task list hidden (View -> Task List). And extension ThunderBirthDay was throwing exceptions because of that (tree.mFilter is undefined). Then this extension could not initialize properly.

Disabling ThunderBirthDay helped, buttons appeared, but there were still similar errors in the console, from other places, but it looks less deadly. Enabling task list makes them all disappear.

It seems hiding the sidebar (I would like to have it hidden anyway) while leaving task list enabled is a good workaround. It makes thing work, but I do not have task list visible.