Fixed a NullPointerException that could occur in History view when revisions were grouped by date.
Resolved a graphical representation problem(debug information in tree nodes) that sometimes appeared in the Working Copy view.
Fixed a NullPointerException that appeared in Revision Graph.
Mac OS X: Resolved a critical issue that prevented the application from starting with Java SE 6 Update 27(1.6.0_27).
Repositories: Fixed IndexOutOfBoundsException that sometimes appeared when deleting from a repository.
Working copy: Pressing OK in the rename dialog for an unversioned file without actually changing the file name was deleting the file from the file system.
