findFeatureComb with 1 element produces error

[frenkiboy]

findFeatureComb with one input element produces error when use.names=TRUE

 library(GenomicRanges)
 library(genomation)
 tab.test = system.file('unitTests/tab.test1', package='genomation')

#1. test regular bed input
r1 = readGeneric(tab.test)
l1 = GRangesList(r1 = r1)
comb1 = findFeatureComb(l1, use.names=TRUE)