WGCNA - error in modulePreservation(): duplicated row.names not allowed - r

Question

I'm having some problems with the modulePreservation function of WGCNA (https://www.rdocumentation.org/packages/WGCNA/versions/1.63/topics/modulePreservation). When I use it with my multiData dataframes (gene expression from case and control groups), I'm having a error of duplicated row.names. In the past, I was able to perform this step with no problems at all.
(Ps. multiExpr = multiData ; control_colors = multiColor)
> modulePreservation(multiExpr, control_colors, dataIsExpr=T, referenceNetworks=1, nPermutations=100, randomSeed=1, quickCor=0, verbose=3, networkType="unsigned")
.checking data for excessive amounts of missing data..
Flagging genes and samples with too many missing values...
..step 1
Flagging genes and samples with too many missing values...
..step 1
..unassigned 'module' name: grey
..all network sample 'module' name: gold
..calculating observed preservation values
Error in `.rowNamesDF<-`(x, value = value) :
duplicate 'row.names' are not allowed
In addition: Warning message:
non-unique values when setting 'row.names': ‘A1CF’, ‘A2M’, ‘AADAC’, ‘AARS’, ‘AASDHPPT’, ‘ABCA12’, ‘ABCA3’, ‘ABCA4’, ‘ABCA8’, ‘ABCB11’, ‘ABCB4’, ‘ABCB9’, ‘ABCC1’, ‘ABCC3’, ‘ABCC6’, ‘ABCD2’, ‘ABCD4’, ‘ABCE1’, ‘ABCF3’, ‘ABCG1’, ‘ABCG2’, ‘ABHD10’, ‘ABHD2’, ‘ABHD4’, ‘ABHD6’, ‘ABI2’, ‘ABL1’, ‘ABL2’, ‘ACAA2’, ‘ACACA’, ‘ACACB’, ‘ACAD10’, ‘ACAD8’, ‘ACADL’, ‘ACADSB’, ‘ACADVL’, ‘ACAN’, ‘ACAP1’, ‘ACAT1’, ‘ACBD3’, ‘ACBD4’, ‘ACCN3’, ‘ACD’, ‘ACE2’, ‘ACHE’, ‘ACIN1’, ‘ACO2’, ‘ACOT7’, ‘ACOT8’, ‘ACOT9’, ‘ACOX3’, ‘ACOXL’, ‘ACPP’, ‘ACR’, ‘ACRV1’, ‘ACSF2’, ‘ACSL3’, ‘ACSL5’, ‘ACSL6’, ‘ACSM3’, ‘ACTB’, ‘ACTC1’, ‘ACTL6B’, ‘ACTL7A’, ‘ACTL8’, ‘ACTN2’, ‘ACTN3’, ‘ACTR1A’, ‘ACTR2’, ‘ACTR3B’, ‘ACTR5’, ‘ACTR8’, ‘ACVR1’, ‘ACVRL1�� [... truncated]
I already checked the row.names and colnames of my multiExpr files, and all are unique values:
sum(duplicated(row.names(multiExpr$Control$data)))
sum(duplicated(row.names(multiExpr$Case$data)))
sum(duplicated(colnames(multiExpr$Control$data)))
sum(duplicated(colnames(multiExpr$Case$data)))
My R version is R version 3.5.1 (2018-07-02)

Answer 1

It seems to be a bug in signedKME()
I've proposed a fix at https://www.biostars.org/p/339950/