diff --git a/DESCRIPTION b/DESCRIPTION
index e8541da..89487c6 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -2,8 +2,8 @@ Package: msPurity
 Type: Package
 Title: Automated Evaluation of Precursor Ion Purity for Mass Spectrometry Based
     Fragmentation in Metabolomics
-Version: 1.27.1
-Date: 2023-08-30
+Version: 1.31.1
+Date: 2024-05-09
 Authors@R: c(
     person(given = "Thomas N.", family = "Lawson",
         email = "thomas.nigel.lawson@gmail.com", role = c("aut", "cre"),
@@ -61,7 +61,7 @@ Suggests:
     RPostgres,
     RMySQL
 VignetteBuilder: knitr
-RoxygenNote: 7.2.3
+RoxygenNote: 7.3.1
 Roxygen: list(markdown = TRUE)
 biocViews: MassSpectrometry, Metabolomics, Software
 Collate: 
diff --git a/NEWS b/NEWS
index 5a16fbe..8af8a75 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+CHANGES IN VERSION 1.30.1 / 1.31.1
++ Update example for purityX causing build error
+
 CHANGES IN VERSION 1.27.1
 + createMSP fix - now uses the median precursor MZ and precursor RT in the MSP file
 
diff --git a/R/purityX-constructor.R b/R/purityX-constructor.R
index 9a40535..b9fa849 100644
--- a/R/purityX-constructor.R
+++ b/R/purityX-constructor.R
@@ -54,14 +54,12 @@
 #'
 #' @return a purityX object containing a dataframe of predicted purity scores
 #' @examples
-#' msPths <- list.files(system.file("extdata", "lcms", "mzML",
-#'                     package="msPurityData"), full.names = TRUE,
-#'                     pattern = "LCMS_")
-#' xset <- xcms::xcmsSet(msPths)
-#' xset <- xcms::group(xset)
-#' xset <- xcms::retcor(xset)
-#' xset <- xcms::group(xset)
-#' ppLCMS <- purityX(xset, cores = 1, xgroups = c(1, 2))
+#'
+#' msPths <- list.files(system.file("extdata", "lcms", "mzML", package="msPurityData"), full.names = TRUE, pattern = "LCMS_")
+#' xset <- readRDS(system.file("extdata", "tests", "xcms", "ms_only_xset_OLD.rds", package="msPurity"))
+#' xset@filepaths[1] <- msPths[basename(msPths)=="LCMS_1.mzML"]
+#' xset@filepaths[2] <- msPths[basename(msPths)=="LCMS_2.mzML"]
+#' px <- purityX(xset, singleFile = 1)
 #'
 #' @export
 purityX <- function(xset, purityType="purityFWHMmedian", offsets=c(0.5, 0.5),
diff --git a/man/msPurity.Rd b/man/msPurity.Rd
index 2c7d7ec..b158cf3 100644
--- a/man/msPurity.Rd
+++ b/man/msPurity.Rd
@@ -2,8 +2,31 @@
 % Please edit documentation in R/msPurity.R
 \docType{package}
 \name{msPurity}
+\alias{msPurity-package}
 \alias{msPurity}
 \title{\code{msPurity} package}
 \description{
 \href{https://bioconductor.org/packages/release/bioc/html/msPurity.html}{msPurity Bioconductor}
 }
+\seealso{
+Useful links:
+\itemize{
+  \item \url{https://github.com/computational-metabolomics/msPurity/}
+  \item Report bugs at \url{https://github.com/computational-metabolomics/msPurity/issues/new}
+}
+
+}
+\author{
+\strong{Maintainer}: Thomas N. Lawson \email{thomas.nigel.lawson@gmail.com} (\href{https://orcid.org/0000-0002-5915-7980}{ORCID})
+
+Other contributors:
+\itemize{
+  \item Ralf Weber [contributor]
+  \item Martin Jones [contributor]
+  \item Julien Saint-Vanne [contributor]
+  \item Andris Jankevics [contributor]
+  \item Mark Viant [thesis advisor]
+  \item Warwick Dunn [thesis advisor]
+}
+
+}
diff --git a/man/purityX.Rd b/man/purityX.Rd
index 807cf08..8c2a584 100644
--- a/man/purityX.Rd
+++ b/man/purityX.Rd
@@ -69,13 +69,11 @@ Constructor for the purityX class.
 Given an XCMS object get the anticipated precursor purity of the grouped peaks
 }
 \examples{
-msPths <- list.files(system.file("extdata", "lcms", "mzML",
-                    package="msPurityData"), full.names = TRUE,
-                    pattern = "LCMS_")
-xset <- xcms::xcmsSet(msPths)
-xset <- xcms::group(xset)
-xset <- xcms::retcor(xset)
-xset <- xcms::group(xset)
-ppLCMS <- purityX(xset, cores = 1, xgroups = c(1, 2))
+
+msPths <- list.files(system.file("extdata", "lcms", "mzML", package="msPurityData"), full.names = TRUE, pattern = "LCMS_")
+xset <- readRDS(system.file("extdata", "tests", "xcms", "ms_only_xset_OLD.rds", package="msPurity"))
+xset@filepaths[1] <- msPths[basename(msPths)=="LCMS_1.mzML"]
+xset@filepaths[2] <- msPths[basename(msPths)=="LCMS_2.mzML"]
+px <- purityX(xset, singleFile = 1)
 
 }