Imported vcf file and broke addressbook

[Nikolai Maziashvili]

Hi everyone,
I have imported vcf contact list, that i had exported from another kolab instance, an now i can't even open addressbook.
While tailing logs i can see calendar refreshing, my phone syncing data and some other things but nowhere even a mention that i am trying to open addressbook.
When import was finished i got message about successfully imported 70 contacts and when i pressed on "contacts" it started to refresh ... endlessly. I let it run for good few minutes, but nothing... Then i have decided to switch to calendar view, and back to addressbook (sort of to let firefox refresh the page)... and ... nothing... i can switch to files, calendar, email...well everywhere and do everything - adding appointments, sending email, but i can't switch to addressbook. All i see is Loading in firefox tab.
Could you please help me to debug this situation?
Regards,
Nikolai

PS i've just tried to add contact from email view (you know, when you send email you can add then into contacts - torso with plus sign) and here too it started to "load" endlessly. 
PPS there is no mention of "contacts" or "addressbook" anywhere in the logs.

 		 	   		  
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