Invalid Target Platform Specified HTML5

I wanted to create a simple html5 test. I pulled 4.2 and downloaded emscripten 1.6, looked .emscripten file to check all dependencies exists and rebuild unreal frontend frontend project without any error.

Then I select a template project, chose platform as html5 and click launch button button and hit the bug as written in the title. The CLI screen just stays for a few seconds so got quick a screen capture.

Could anyone help me how to understand this issue and point me in the right direction?

Did you rebuild the editor too after installing the SDK?- You probably want to do that too.

Hello,

Thank you for your report. We were not able to investigate this on the engine version you reported, but there have been many version changes to UE4 since this question was first posted. With a new version of the Engine comes new fixes and it is possible that this issue has changed or may no longer occur. Due to timetable of when this issue was first posted, we are marking this post as resolved for tracking purposes. If you are still experiencing the issue you reported in the current engine version, then please respond to this message with additional information and we will investigate as soon as possible. If you are experiencing a similar, but different issue at this time, could you please submit a new report for it.

Thanks!