On Dec 13, 2013, at 20:51 PM, Nick Dokos wrote:

> Dror Atariah <drorata@gmail.com> writes:
> 
>> On Dec 13, 2013, at 16:08 PM, Nick Dokos wrote:
>> 
>>> Dror Atariah <drorata@gmail.com> writes:
>>> 
>>>> Today I realized that I cannot execute successfully 'org-mobile-push'. In particular here is the output from '*Messages*':
>>>> 
>>>> Creating agendas...
>>>> Agenda written to Org file /Users/drorata/Dropbox/MobileOrg/agendas.org
>>>> Creating agendas...done
>>>> Saving all Org-mode buffers...
>>>> (No files need saving)
>>>> Saving all Org-mode buffers... done
>>>> Copying files...
>>>> Writing index file...
>>>> org-mobile-create-index-file: Wrong type argument: sequencep, :grouptags
>>>> 
>>>> I first step I took was to update the package; now 'org-version' yields 
>>>> "Org-mode version 8.2.4 (8.2.4-3-g7fe99a-elpa @
>>>> /Users/user/.emacs.d/elpa/org-plus-contrib-20131209/)". However,
>>>> problem is still
>>>> here.
>>>> 
>>>> Next I don't really know what to do... I have all my emacs' settings in 
>>>> https://github.com/drorata/emacs_setup
>>>> 
>>>> How can I debug this problem and solve it?
>>> 
>>> In the same way that you debug all such problems: toggle debug-on-error,
>>> try to do org-mobile-push again and look at the resulting backtrace (or
>>> post it so others can look at it).
>> I evaluated (setq debug-on-error t), and then executed org-mobile-push again. There was no output in the *Backtrace* buffer.... 
>> 
> 
> Try deleting the org-mobile.elc file and reloading org-mobile.el. Then
> try evaluating
> 
>     (let ((debug-on-error t))
>          (org-mobile-push))
> 
> and see if that gives you a backtrace.

Managed to get output... 

You can find it here: https://gist.github.com/drorata/7950857

I could not find my way in this output... :(

>>> A shot in the dark: what's the value of org-tag-alist?
>> The value of org-tag-alist is:
>> 
>> (("PRIVATE" . 112)
>> (:startgroup)
>> ("WORK" . 119)
>> (:grouptags)
>> ("WORK@mittagseminar" . 109)
>> ("WORK@open_questions" . 105)
>> ("WORK@diss" . 100)
>> ("WORK@CV")
>> (:endgroup \.nil)
>              ^^^^^
> This looks strange to me, although it's not clear it would cause the
> problem even if it is wrong (which it may or may not be).
Indeed strange, and probably a typo. There was a missing space. I corrected this before taking the measures you mentioned above.
> 
> Nick
> 

Best,
Dror