org.tigris.subversion.javahl.ClientException - svn: Unable to open an ra_local session to URL svn: Unable to open repository 'file:///D:/SvnData/Repositories/Project' svn: Expected FS format between '1' and '3'; found format '4'

Got a similair error exception in Aptana?

When you install Aptana 1.5 version, you’ll notice that the included Subclipse plugin is 1.4.x.

With Subversion 1.6.x. installed on your system, the Subclipse plugin in Aptana won’t work. Since Subversion client & Subclipse (& for example Tortoise SVN), all need to be from the same version.
So the solution is to upgrade Supclipse to 1.6.x.
However it bugged me, to do so.
Here is the complete solution:

1. Verify Aptana 1.4.x version: In Aptana click:
   Help > About Aptana Studio > Installation Details
   Subclipse 1.4.x. should be in this installed sofware list.
   Shutdown Aptana.
2. Go to your installation folder of Aptana, for example:
   C:\Program Files\Aptana\
3. In the features folder, remove all the folders and jars with subversion or subclipse in the file name:
   C:\Program Files\Aptana\features\
4. In the plugin folder, remove all the folders and jars with subversion or subclipse in the file name:
   C:\Program Files\Aptana\plugins\
5. From now, there is no Subclipse installed in your Aptana. Let’s install 1.6.x.
   In Aptana click: Help > Install New Software
6. Add the following software site, and name it ‘Subclipse’: http://subclipse.tigris.org/update_1.6.x
7. Select the “Core SVN Kit” and “Subclipse” checkboxes, and press “Next”
8. Incase you’ll get the following error: “The operation cannot be completed. See the details.”;
   uncheck: “Subclipse Integration for Mylyn… “
9. Incase you’ll have problems with “Accepting the agreements”, because the “Finish” button does not appear after checking “agree”. Retry the above 3 steps, but make sure, you uncheck the Mylyn on the first window (”Available software”), instead of pressing “Next” first.
10. Restart Aptana & Done! Your SVN should work right now. To verify Aptana 1.6.x version, repeat step 1.

1. Download and install subversion
   http://subversion.tigris.org/servlets/ProjectDocumentList?folderID=8100
2. Download and install Tortoise SVN for windows:
   http://sourceforge.net/projects/tortoisesvn/files/Application/1.6.5/TortoiseSVN-1.6.5.16974-win32-svn-1.6.5.msi/download
3. Create a new repository
   Create a folder using Windows Explorer, let’s say it’s called D:\Repositories\Standard. (Note that in this case I called the project “Standard”,
   but you can use whatever you want.)
   This folder should be located on your USB Drive, because this is the part that you’ll be dragging around with you.
   Open that folder and right click on the client area, select TortoiseSVN and then Create repository here. Choose the native file system option.
4. Create a working copy
   Right click on the My Documents folder (or any folder of your choosing), and select SVN Checkout from the popup menu.
   In this example, I’ve called the repository that I created in step 2 Standard.
   In the URL of repository field, fill in a URL that points to the newly created repository, i.e. file:///F:/Repositories/Standard.
   (Make sure you are pointing to the correct drive. In my case the USB stick is F:)
   A window should pop up stating that it has completed at revision 0.
5. Use it
   Now go into your recently checked out folder, and right click on them and from the TortoiseSVN menu, select Add.
   This command will mark the files for addition to the repository.
   To complete the add, right on the client area and select SVN Commit. This will add all the files marked for addition to the repository and commit new versions of files already in the repository.

So that’s all, you’ll now have a SVN Repo on your USB drive, which you can cary arround.