diff --git a/src/downloads/downloads.jl b/src/downloads/downloads.jl
index 41f7d31..0cd5b8b 100644
--- a/src/downloads/downloads.jl
+++ b/src/downloads/downloads.jl
@@ -24,7 +24,7 @@ Arguments
 - `overwrite` : `false` by default. If set to true, existing data will be overwritten.
 """
 function download(
-    e5ds :: Union{ERA5Hourly,ERA5Monthly},
+    e5ds :: ERA5CDStore,
     evar :: SingleVariable,
     ereg :: ERA5Region;
     ispy :: Bool = false,
@@ -32,6 +32,8 @@ function download(
     overwrite :: Bool = false
 )
 
+    downloadcheckereg(ereg)
+
     if ispy
           pythonprint(e5ds,evar,ereg)
     else; cdsretrieve(e5ds,evar,ereg,grib,overwrite)
@@ -63,12 +65,13 @@ Arguments
 - `overwrite` : `false` by default. If set to true, existing data will be overwritten.
 """
 function download(
-    e5ds :: Union{ERA5Hourly,ERA5Monthly},
+    e5ds :: ERA5CDStore,
     evar :: Vector{SingleVariable},
     ereg :: ERA5Region;
     overwrite :: Bool = false
 )
 
+    downloadcheckereg(ereg)
     cdsretrieve(e5ds,evar,ereg,overwrite)
 
 end
@@ -119,6 +122,8 @@ function download(
     overwrite :: Bool = false
 )
 
+    downloadcheckereg(ereg)
+
     if ispy
         pythonprint(e5ds,evar,ereg)
     else
@@ -150,6 +155,18 @@ function downloadcheckhPa(
 
 end
 
+function downloadcheckereg(
+    ereg :: ERA5Region
+)
+
+    if !(ereg.geo <: RectRegion)
+
+        error("$(modulelog()) - ERA5Reanalysis is not yet set up to download GeoRegions that are not RectRegions. Check back in a later update for more.")
+
+    end
+
+end
+
 function downloadcheckplvl(
     pall :: Bool,
     ptop :: Int,