unity 5.3 - wont Build WEBGL

Hi - My game was working 100% - I installed 5.3 now it wont build. It gets to Building List of Referenced Assemblies - then goes no further. this is a game that normally took less than 2 minutes to build in WEBGL.

I have uninstalled Unity, took all files out of my PC (including all temp files etc) reinstalled it but its still the same!

Any help would be great.

 

i forgot to say.. after about 30 minutes of nothing happening, I cant cancel the build an have to shut down unity from the task manager

 

@Barry100 Did you check the WebGL module in the installer? The installer for 5.3 is new and you do have to specifically check all the platforms you want to build to. Thankfully you don't have to uninstall Unity, just run the installer.exe again and check the WebGL platform

 

i had every one installed,..

 

I have the same problem and the folder Release, that Unity have created, should have a file with name proyect.js, I upload all files to my server and i go to the address web but i see a alert window and say me that there is a error and i have to see the console log. In console log say me, 404 not found file myproyect.js and i can't use my application.