title: SVN error E720005, permission denied on binary files
body: <p>I am working with svn on a network windows shared drive. Mapped to a drive letter.
  Recently I updated from svn 1.7.7 to 1.8.0. This worked well for many repos.
  Today I created a new repos and continously having problems with it. No other person is yet accessing it.</p>
  
  <p>I cannot commit binary files. The exact same stuff is working for other projects, but not 
  for this new repos.
  Adding text files works good, when I commit a binary file, like a .png it fails.</p>
  
  <pre><code>Adding  (bin)  SW\hw\system.bit
  Transmitting file data .svn: E720005: Commit failed (details follow):
  svn: E720005: Can't set position pointer in file 'G:\Projekt\P2SW\CASTLE\6_Softw
  are\SVN\CTE_5_HW_Self_Bip46\db\txn-protorevs\18-18.rev': Zugriff verweigert
  </code></pre>
  
  <p>So it says "permission denied", but I have permissions, that is sure.
  It is as well not the size, i can commit bigger files, when they are text.</p>
  
  <p>Any suggestion is very welcome.
  Thanks</p>