Hello, everyone. I've got an exception.
Steps I made:
* Open trunk history
* Search for specific commit by typing bug tracker id in filtration bar at the top
* Fetch more commits with "Next 100" button until I saw the commit
* Open some of the commited files with double click
* Close all opened viewers and tried to re-open first of the commited files
* Exception window appeared.

NOTE I'm not subscribed to this mailing list so please send me replies/questions directly.

Exception window content:
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Subversion Exception!
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Subversion encountered a serious problem.
Please take the time to report this on the Subversion mailing list
with as much information as possible about what
you were trying to do.
But please first search the mailing list archives for the error message
to avoid reporting the same problem repeatedly.
You can find the mailing list archives at
http://subversion.apache.org/mailing-lists.html

Subversion reported the following
(you can copy the content of this dialog
to the clipboard using Ctrl-C):

In file
 'D:\Development\SVN\Releases\TortoiseSVN-1.8.11\ext\subversion\subversion\libsvn_wc\wc_db.c'
 line 8760: assertion failed (svn_dirent_is_absolute(local_abspath))
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ОК   
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OS Windows 8.1 64-bit Build 6300