No Speedtree .srt import option available in compiled 4.1

I posted this over in content creation but i think it belongs here. Sorry for double posting.

I have 2 versions of UE4 4.1 installed.

One is through the UE4 installer and the other is compiled because i wanted to play around with Allegorithmics Substance which only integrates in the compile.

Both work just fine.
UE4 Installer version has no Substance, Compiled version has Substance.

Now the dilemma:
UE4 installer version has Speedtree .srt import option but the compiled version does not.
How do i get Speedtree .srt import option integrated into the compiled version?