Fix for making rootPath KVC compliant for the file tree.

FileDrawer/FileTreeDataSource.h

@@ -16,6 +16,7 @@
 	IBOutlet NSOutlineView *outlineView;
 }
 
+- (NSString *)rootPath;
 - (void)setRootPath:(NSString *)rootPath;
 
 - (void)reloadPathNode:(PathNode *)item;

FileDrawer/FileTreeDataSource.m

@@ -19,6 +19,11 @@
 	[self setRootPath: [[[NSUserDefaultsController sharedUserDefaultsController] defaults] objectForKey:@"fileDrawerRootPath"] ]; 
 }
 
+- (NSString *)rootPath
+{
+	return [[rootNode url] path];
+}
+
 - (void)setRootPath: (NSString *)rootPath
 {
 	[[[[outlineView tableColumns] objectAtIndex:0] headerCell] setStringValue:[[NSFileManager defaultManager] displayNameAtPath:rootPath]];