Issue
I use Windows 10 and jre1.8.0_51. I don't know why when I start Eclipse it always displays an alert message "An error has occurred. See the log file null."
And I cannot open Eclipse thereafter. I tried to search Google and have no best solution. I uninstalled JRE and installed it again, but it still produces the same problem.
Solution
Had same issue. To resolve it : Go to Eclipse directory -> Open CMD -> eclipse -clean
worked well.
Answered By - Fidias