diff --git a/.vscode/settings.json b/.vscode/settings.json
index cbf1801..3e75259 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -42,5 +42,5 @@
         "_VERSION",
         "_"
     ],
-    "Lua.runtime.version": "Lua 5.1",
+    "Lua.runtime.version": "Lua 5.4",
 }
\ No newline at end of file
diff --git a/CardLayout.lua b/CardLayout.lua
index 5423272..c0c8173 100644
--- a/CardLayout.lua
+++ b/CardLayout.lua
@@ -33,7 +33,10 @@
 
     local categories = renderHelpers.getCategories(props.shopState.products)
     local selectedCategory = props.shopState.selectedCategory
-    local shopProducts = renderHelpers.getDisplayedProducts(categories[selectedCategory].products, props.configState.config.settings)
+    local shopProducts = {}
+    if categories[selectedCategory] then
+        shopProducts = renderHelpers.getDisplayedProducts(categories[selectedCategory].products, props.configState.config.settings)
+    end
     local currency = props.shopState.selectedCurrency
 
     local headerSuffix = ""
diff --git a/DefaultLayout.lua b/DefaultLayout.lua
index 30572df..40d1b84 100644
--- a/DefaultLayout.lua
+++ b/DefaultLayout.lua
@@ -135,8 +135,12 @@
     local maxPriceWidth = 0
     local maxNameWidth = 0
     props.shopState.numCategories = #categories
-    local catName = categories[selectedCategory].name
-    local shopProducts = renderHelpers.getDisplayedProducts(categories[selectedCategory].products, props.configState.config.settings)
+    local catName = "*"
+    local shopProducts = {}
+    if categories[selectedCategory] then
+        catName = categories[selectedCategory].name
+        shopProducts = renderHelpers.getDisplayedProducts(categories[selectedCategory].products, props.configState.config.settings)
+    end
     local productsHeight = display.bgCanvas.height - headerHeight - footerHeight - 2
     local heightPerProduct = math.floor(productsHeight / #shopProducts)
     local layout
@@ -154,7 +158,7 @@
 
     local currency = props.shopState.selectedCurrency
     local currencySymbol = renderHelpers.getCurrencySymbol(currency, layout)
-    while maxAddrWidth == 0 or maxAddrWidth + maxQtyWidth + maxPriceWidth + maxNameWidth > display.bgCanvas.width - 3 do
+    while #shopProducts > 0 and (maxAddrWidth == 0 or maxAddrWidth + maxQtyWidth + maxPriceWidth + maxNameWidth > display.bgCanvas.width - 3) do
         if props.configState.config.theme.formatting.layout == "auto" and (maxAddrWidth + maxQtyWidth + maxPriceWidth + maxNameWidth > display.bgCanvas.width - 3) then
             if layout == "large" then
                 layout = "medium"
diff --git a/radon.lua b/radon.lua
index aaa58fc..9b1f50d 100644
--- a/radon.lua
+++ b/radon.lua
@@ -1,4 +1,4 @@
-local version = "1.3.21"
+local version = "1.3.22"
 local configHelpers = require "util.configHelpers"
 local schemas       = require "core.schemas"
 local oldPullEvent = os.pullEvent