Project won't build

Hi.

I'm trying to build a project I'm working on but the compiler seem to be stuck on "Packaging assets: resources.asset".. When looking in the Task Manager, Unity is still responding but nothing is happening.
My project is really small; just a few scripts, some audio and a handful of textures..

I'm not sure if this is what's causing my problems: I downloaded the Volumetric Lights for Unity 5 (https://github.com/SlightlyMad/VolumetricLights) from Github, and in the documents it said I was required to add the shaders to "Always included shaders" in Project > Graphics settings. So I did..
Worth noting is I haven't tried building my project without the Volumetric Lights. I will try that soon.. But I would like to know if it is the Vol. Lights causing this; is there a fix I can apply somehow?

I have tried a 32-bit and 64-bit build, both with the same result.

Using Unity 5.5.0f3 64-bit Personal Edition.

UPDATE:
Tried removing Volumetric Light, and removed the shaders from Graphics settings; still won't build; still stuck

#2: Removed the Postprocessing Beta 4 (by Unity) from my project, and the build finished.. Is there maybe anything special I need to do to get my project to compile using Unity's new Post Processing effects?

 

Were you ever able to build while using the Post Processing Effects Beta? I seem to be having the same problem.

 

Yes.. It took a pretty darn long time for the build to finish.. Once it had finished one time, the other builds went smooth..