LSMASHSource: Missing requirements

Hi,

i installed avisynth 2.60 on windows 7 in a virtualbox. also avspmod and the requirements for lsmashsource ms visual c++ 2015 (also 2013). but when i load a avisynth script to avspmod i cant open the video. the error is something like "missing library". ffms2 works. how can i check whats missing? i think al is installed?

valit