=== modified file 'bzrlib/workingtree.py'
--- bzrlib/workingtree.py       2006-07-03 18:27:35 +0000
+++ bzrlib/workingtree.py       2006-07-13 21:56:16 +0000
@@ -288,7 +288,12 @@

         if hc.needs_write:
             mutter("write hc")
-            hc.write()
+            try:
+                hc.write()
+            except (OSError, IOError), e:
+                if e.errno not in (errno.EPERM, errno.EACCES):
+                    raise
+                note('could not update hash-cache EPERM')

         if _inventory is None:
             self._set_inventory(self.read_working_inventory())
@@ -1377,7 +1382,12 @@
             # shared lock files
             (self._control_files is self.branch.control_files and
              self._control_files._lock_count==3)):
-            self._hashcache.write()
+            try:
+                self._hashcache.write()
+            except (OSError, IOError), e:
+                if e.errno not in (errno.EPERM, errno.EACCES):
+                    raise
+                note('could not update hash-cache EPERM')
         # reverse order of locking.
         try:
             return self._control_files.unlock()