diff --git a/R/arcrest_tools.R b/R/arcrest_tools.R
index 8c4629e2..6386d871 100644
--- a/R/arcrest_tools.R
+++ b/R/arcrest_tools.R
@@ -215,5 +215,5 @@ query_usgs_arcrest <- memoise::memoise(function(AOI = NULL,  ids = NULL,
     }
     all_out[[l]] <- out
   }
-  sf::st_sf(data.table::rbindlist(all_out))
+  tryCatch(sf::st_sf(data.table::rbindlist(all_out)), error = function(e) NULL)
 }, ~memoise::timeout(nhdplusTools_memoise_timeout()), cache = nhdplusTools_memoise_cache())
diff --git a/man/nhdplusTools_cache_settings.Rd b/man/nhdplusTools_cache_settings.Rd
new file mode 100644
index 00000000..22597a96
--- /dev/null
+++ b/man/nhdplusTools_cache_settings.Rd
@@ -0,0 +1,24 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/A_nhdplusTools.R
+\name{nhdplusTools_cache_settings}
+\alias{nhdplusTools_cache_settings}
+\title{nhdplusTools cache settings}
+\usage{
+nhdplusTools_cache_settings(mode = NULL, timeout = NULL)
+}
+\arguments{
+\item{mode}{character 'memory' or 'filesystem'}
+
+\item{timeout}{numeric number of seconds until caches invalidate}
+}
+\value{
+list containing settings at time of calling. If inputs are
+NULL, current settings. If settings are altered, previous setting values.
+}
+\description{
+Provides an interface to adjust nhdplusTools `memoise` cache.
+
+Mode and timeout can also be set using environment variables.
+`NHDPLUSTOOLS_MEMOISE_CACHE` and `NHDPLUSTOOLS_MEMOISE_TIMEOUT` are
+used unless overriden with this function.
+}
diff --git a/tests/testthat/test_get_vaa.R b/tests/testthat/test_get_vaa.R
index 69efb95b..e38bd1af 100644
--- a/tests/testthat/test_get_vaa.R
+++ b/tests/testthat/test_get_vaa.R
@@ -2,7 +2,8 @@
 
 test_that("vaa examples", {
   skip_on_cran()
-  testthat::skip_on_os("linux")
+  skip_on_os("linux")
+  skip_on_os("mac")
 
   vaa_names <- get_vaa_names()
 
@@ -36,7 +37,8 @@ test_that("vaa examples", {
 test_that("catchment chars", {
 
   skip_on_cran()
-  testthat::skip_on_os("linux")
+  skip_on_os("linux")
+  skip_on_os("mac")
 
   httptest::without_internet({
     suppressMessages(expect_warning(w <- get_characteristics_metadata(cache = FALSE)))
diff --git a/tests/testthat/test_rescale_catchments.R b/tests/testthat/test_rescale_catchments.R
index 483f094b..bf3d7db3 100644
--- a/tests/testthat/test_rescale_catchments.R
+++ b/tests/testthat/test_rescale_catchments.R
@@ -1,6 +1,7 @@
 
 test_that("rescale", {
   skip_on_cran()
+  skip_on_os("mac")
 
   vars <- data.frame(characteristic_id = c("CAT_EWT", "CAT_EWT", "CAT_EWT", "CAT_EWT", "CAT_BASIN_AREA"),
                      summary_statistic = c("area_weighted_mean", "min", "sum", "max", "sum"))