[Continue S3 support] [Handle set configuration errors]

src/renderer/ipc/ConfigIPC.js

@@ -40,8 +40,8 @@ const addListeners = (ipcMain, {standardIPCReply}) => {
         .then(() => {
           setConfigValue(++i);
         })
-        .catch(() => {
-          setConfigValue(++i);
+        .catch(error => {
+          standardIPCReply(event, Constants.IPC_Set_Config_Values_Reply, {}, error);
         });
       } else {
         standardIPCReply(event, Constants.IPC_Set_Config_Values_Reply, {});

src/renderer/ipc/MountsIPC.js

@@ -93,6 +93,7 @@ const addListeners = (ipcMain, {setTrayImage, standardIPCReply}) => {
     const providerList = [
       ...Constants.PROVIDER_LIST,
       ...data.RemoteMounts,
+      ...data.S3Mounts,
     ];
     for (const provider of providerList) {
       driveLetters[provider] = [];