Sharepoint 2007 navigation error "page has been modified by another author"

It has been logged as a bug.

1- Go to Navigation and make a list of libraries that have been corrupted. (Look in the 'Selected Item' box at the bottom under Navigation and check the URL. Don't try save, just click Cancel.

2- Click on the document libraries in question, then Settings, Document Library or List Settings, Title Description and Navigation. Change the display on quick launch to No.

3- Open SharePoint Designer and go to the web site view. At the bottom of the website view screen, choose the Navigation option. Delete the main document libraries. Save and exit.

4- On your SharePoint site, go to View All Site Content, click on the unlinked document libraries from step 2 and relink them to the quick launch.

PowerPoint slide show opens as edit mode from SharePoint library

Actually and after 3 month of searching the problem I found that the coz of this problem was on registry level as below :

1. Go to start menu and click run "regedit".


2. Open registry and browse to HKEY_CLASSES_ROOT\PowerPoint.Show.8


3. Double click on BrowserFlags key, and change the value to 8 (Default Value = a)

After changing the registry and if the problem does not solved do the following:

1. Go to “C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\TEMPLATE\XML” or 60 folder in case wss2.0 version.


2. Open the file “DOCICON.XML” using text editor.


3. Locate the line that start with “<mapping value="”ichtmppt.gif”……”" key="”PowerPoint.Slide”"> and change OpenControl attribute to be (OpenControl="")
   
4. Locate the line that start with “<mapping value="”icpps.gif”…..”" key="”pps”"> and change OpenControl attribute to be (OpenControl="")
   
5. Save and close.


6. Open the file “htmltransinfo.xml” using text editor.


7. Locate the line that start with “<mapping extension="”pps”…..”"> and change ProgId attribute to be (ProgId="")
   
8. Save and close.


9. Finally restart IIS and pray to me loool.

This because maybe bug on Sharepoint.opendocument class, so what I did is to remove sharepoint.open function for .pps files.

Salam