2.71 - can't change theme to classic

[BetterRed]

When I did this and clicked Apply the Windows busy spinner spun for about 10 seconds and then I got this

calibre, version 2.71.0
ERROR: Unhandled exception: <b>error</b>:(5, 'MoveFileEx', 'Access is denied.')

calibre 2.71 [64bit]  embedded-python: True is64bit: True
Windows-8-6.2.9200 Windows ('64bit', 'WindowsPE')
('Windows', '8', '6.2.9200')
Python 2.7.9
Windows: ('8', '6.2.9200', '', 'Multiprocessor Free')
Successfully initialized third party plugins: Reading List (1, 6, 6) && Modify ePub (1, 3, 13) && Diaps Editing Toolbag (0, 3, 2) && Extract ISBN (1, 4, 4) && Beam Ebooks (1, 0, 0) && Drop Search Results (1, 0, 5) && Count Pages (1, 6, 9) && EpubSplit (2, 1, 2) && Quality Check (1, 9, 11) && Generate Cover (1, 5, 21) && Barnes & Noble (1, 2, 14) && Favourites Menu (1, 0, 4) && Goodreads (1, 1, 11) && GetFileName (0, 0, 5) && Find Duplicates (1, 6, 2) && Resize Cover (1, 0, 3) && View Manager (1, 3, 2)
Traceback (most recent call last):
  File "site-packages\calibre\gui2\preferences\main.py", line 399, in accept
  File "site-packages\calibre\gui2\preferences\main.py", line 360, in commit
  File "site-packages\calibre\gui2\preferences\look_feel.py", line 637, in commit
  File "site-packages\calibre\gui2\icon_theme.py", line 780, in commit_changes
  File "site-packages\calibre\gui2\icon_theme.py", line 833, in install_icon_theme
  File "site-packages\calibre\gui2\icon_theme.py", line 811, in safe_copy
  File "site-packages\calibre\utils\filenames.py", line 487, in atomic_rename
error: (5, 'MoveFileEx', 'Access is denied.')

BR

[kovidgoyal]

You have some readonly files in your calibre config folder.

[BetterRed]

Correct - most my mimetype images and some of my column icon images were read only.

I lost replacement images for document_open , ok, save and windows_close. No harm done, they were backed up.

BR