I installed e(fx)clipse over my existing Eclipse Mars installation using the update sites given here: https://projects.eclipse.org/projects/technology.efxclipse/downloads
The installation worked fine, e(fx)clipse also seems to be loaded (load screen on startup changed). But when starting Eclipse, I get the following error displayed after selecting the workspace: "An error has occured. See the log file [...]".
Can anybody help me with this? I would add the log file, but I'm new here and I don't know how to upload.
Thank you very much.
I now solved the problem by myself. I don't know exactly what the problem was, but it seems as if workspace settings were a problem. I deleted the whole workspace directory so it was recreated, and that method worked out fine. I also installed a more recent version of the jdk1.8, but I don't think that was a problem since I also got the error after installation and before I deleted the workspace directory.