MACS2 error

[mijhamilt]

I am getting a permission denied error with MACS2 when running snapATAC. I can run macs2 in the terminal just fine, but not from R. Here is the code:

runMACS(
obj=x.sp[which(x.sp@cluster==1),],
output.prefix="atac_060_ASCP",
path.to.snaptools="/usr/local/bin/snaptools",
path.to.macs="/home/michael/anaconda2/lib/python2.7/site-packages/MACS2",
gsize="mm",
buffer.size=500,
num.cores=30,
macs.options="--nomodel --shift 37 --ext 73 --qval 1e-2 -B --SPMR --call-summits",
tmp.folder=tempdir()
)

Epoch: checking input parameters ...
Epoch: extracting fragments from each snap files ...
sh: 1: /home/michael/anaconda2/lib/python2.7/site-packages/MACS2: Permission denied
Error in runMACS(obj = x.sp[which(x.sp@cluster == 1), ], output.prefix = "atac_060_ASCP", :
'MACS' call failed

thank you,
Michael