It is linked against the Subversion library version 1.6.16.
This is a bugfix/maintenance release.
You can get it from our download page:
Subversion 1.6.16 contains a security fix CVE-2011-0715:
but the issue only applies to servers. TortoiseSVN is not affected by
If you upgrade from a version earlier than 1.6.10, you have to run a
"repair install" right after the upgrade finishes. To do that, run the
installer again and click on the "Repair Installation" button.
I'm sorry about the inconvenience.
If you want to know why the repair install is required, you can read
about the technical details in my post: