I just downloaded a fresh Eclipse JEE Neon.1a Release (4.6.1) on my Windows 10 machine.
I went to the marketplace to get the latest Subversive SVN Team Provider 4.0.2.
Trying to install results in the Message: The following solutions are not available: SVN Team Provider 4.0.2.
I chose to continue anyways, and it seemed to work.
After the restart, i chose the SVNKit 1.8.14 Subversive SVN Connector and installed without any issues.
Now I was able to do basic SVN operations, all seemed fine. Except to share a new project. I created a new Project called "test" and tried to share as a new project. That results in the Message:
Share project was failed. Can't overwrite cause with org.tmatesoft.svn.core.SVNException: svn: E160013: URL 'http://sol:3380/svn/repo/test' non-existent in that revision.
I tried to share a new project to another SVN Server, same error message. I repeated the whole process on different machines, same message.
I Installed SVN Team Provider directly from the Update Site instead of the Marketplace. Same Issue.
I went to the SVNKit website to try older Versions of SVNKit and installed via the archived Update Sites, but they wont even show up in the SVN Connector Chooser in Eclipse.
I really dont know what to do anymore, can anyone help me to get it work?
I hope this solution will help you as it helped me. I think your problem is related to an unmatched client/server version. Neon subversive version is 4 and related svn connector is 1.8. But you probably need an svn connector 1.7 as it was in my case. Try the next steps and let me know if it works. Otherwise let me know the point in which you get in trouble.
bye!