diff --git a/app/index.html b/app/index.html
index 2d9fb64..d59e105 100644
--- a/app/index.html
+++ b/app/index.html
@@ -27,7 +27,7 @@
         <!-- <link rel="stylesheet" href="css/aether_layout_flow.css"> -->
         <!-- <link rel="stylesheet" href="css/aether_layout_grid.css"> -->
         <link rel="stylesheet" href="http://dev.oneskyit.local:5000/static/svelte/build/aether_modules_core.css">
-        <link rel="stylesheet" href="http://dev.oneskyit.local:5000/static/svelte/build/aether_modules_other.css">
+        <!-- <link rel="stylesheet" href="http://dev.oneskyit.local:5000/static/svelte/build/aether_modules_other.css"> -->
 
         <link href="http://dev.oneskyit.local:5000/static/svelte/build/bundle.css" rel="stylesheet">
         <link href="http://dev.oneskyit.local:5000/static/svelte/build/reloading.css" rel="stylesheet">
@@ -76,10 +76,10 @@
         const page_for = { 'event': event_id, 'event_device': event_device_id, 'event_location': event_location_id }; // Simple key value like object
         console.log(page_for);
 
-        const host_file_cache_path = 'file_cache'; // app_config.host_file_cache_path; // 'file_cache/'
-        console.log(host_file_cache_path);
-        const host_file_temp_path = 'temp' // app_config.host_file_temp_path; // 'temp/'
-        console.log(host_file_temp_path);
+        const host_file_cache_path = app_config.host_file_cache_path; // 'file_cache/'
+        // console.log(host_file_cache_path);
+        const host_file_temp_path = app_config.host_file_temp_path; // 'temp/'
+        // console.log(host_file_temp_path);
 
         let idb_name = app_config.idb_name;
 
diff --git a/app/js/aether_native_app_v3.js b/app/js/aether_native_app_v3.js
index 067fb00..6f5fbdb 100644
--- a/app/js/aether_native_app_v3.js
+++ b/app/js/aether_native_app_v3.js
@@ -4,17 +4,23 @@ const path = require('path');
 const fs = require('fs');
 const { ipcRenderer } = require('electron');
 
+let home_directory = require('os').homedir();
+console.log('Home: '+home_directory);
+
+let tmp_directory = require('os').tmpdir();
+console.log('Temporary: '+tmp_directory);
+
 let config = null;
 
 exports.load_config = function () {
     console.log('*** Electron framework: load_config() ***');
     console.log('CWD: '+process.cwd());
 
-    let home_directory = require('os').homedir();
-    console.log('Home: '+home_directory);
+    // let home_directory = require('os').homedir();
+    // console.log('Home: '+home_directory);
 
-    let tmp_directory = require('os').tmpdir();
-    console.log('Temporary: '+tmp_directory);
+    // let tmp_directory = require('os').tmpdir();
+    // console.log('Temporary: '+tmp_directory);
 
     // let config = null;
     let config_directory = null;
@@ -71,6 +77,14 @@ exports.load_config = function () {
         //close();
     }
 
+    config.host_file_cache_path = config.host_file_cache_path.replace('[home]', home_directory);
+    config.host_file_cache_path = config.host_file_cache_path.replace('[tmp]', tmp_directory);
+    console.log(config.host_file_cache_path);
+
+    config.host_file_temp_path = config.host_file_temp_path.replace('[home]', home_directory);
+    config.host_file_temp_path = config.host_file_temp_path.replace('[tmp]', tmp_directory);
+    console.log(config.host_file_temp_path);
+
     let import_config_to_ipc_result = ipcRenderer.invoke('import_config', config).then((result) => {
         console.log('IPC import config finished');
         console.log(result);
diff --git a/config.json b/config.json
index 60dc8b5..03d0bb6 100644
--- a/config.json
+++ b/config.json
@@ -24,9 +24,9 @@
   "idb_event_presenter_check_period": 60000,
   "idb_event_file_check_period": 30000,
 
-  "host_file_cache_path": "file_cache",
+  "host_file_cache_path": "[home]/tmp/OSIT/file_cache",
   "host_file_cache_check_period": 30000,
-  "host_file_temp_path": "temp",
+  "host_file_temp_path": "[home]/tmp/OSIT/temp",
 
   "main_loop_interval": 2000,
   "api_token_loop_interval": 1000,
diff --git a/index.js b/index.js
index bac30d4..fd917f5 100644
--- a/index.js
+++ b/index.js
@@ -11,7 +11,15 @@ const process = require('process');
 //const url = require('url');
 // const usb = require('usb') // Compiled with an old version of Node.js
 
+let home_directory = require('os').homedir();
+console.log('Home: '+home_directory);
+
+let tmp_directory = require('os').tmpdir();
+console.log('Temporary: '+tmp_directory);
+
 let config = null;
+let host_file_cache_path = null;
+let host_file_temp_path = null;
 
 console.log(os.type());
 console.log(process.getSystemVersion());
@@ -109,6 +117,23 @@ ipcMain.handle('import_config', async (event, config_data) => {
 
     config = config_data;
 
+    host_file_cache_path = config.host_file_cache_path;
+    host_file_temp_path = config.host_file_temp_path;
+
+    if (fs.existsSync(host_file_cache_path)) {
+        console.log('Host file cache path exists: '+host_file_cache_path);
+    } else {
+        fs.mkdirSync(host_file_cache_path);
+        console.log('Host file cache path created: '+host_file_cache_path);
+    }
+
+    if (fs.existsSync(host_file_temp_path)) {
+        console.log('Host file temp path exists: '+host_file_temp_path);
+    } else {
+        fs.mkdirSync(host_file_temp_path);
+        console.log('Host file temp path created: '+host_file_temp_path);
+    }
+
     return true;
 });
 
@@ -204,14 +229,18 @@ ipcMain.handle('open_hash_file_to_temp', async (event, host_file_cache_path, has
     console.log('ipcMain on open_hash_file_to_temp');
     console.log(`ipcMain open hash file from temp directory: ${host_file_cache_path} -> ${host_file_temp_path}/${filename}`);
 
-    let cache_file_path = path.join(process.cwd(), host_file_cache_path);
+    // NOTE: This may be needed later? Uncomment if paths are relative to working directory.
+    // let cache_file_path = path.join(process.cwd(), host_file_cache_path);
+    let cache_file_path = host_file_cache_path;
     console.log(cache_file_path);
 
     let hash_filename = hash+'.file';
     let full_cache_file_path = path.join(cache_file_path, hash_filename);
     console.log(full_cache_file_path);
 
-    open_temp_file_path = path.join(process.cwd(), host_file_temp_path, filename); // 'temp/'
+    // NOTE: This may be needed later? Uncomment if paths are relative to working directory.
+    // open_temp_file_path = path.join(process.cwd(), host_file_temp_path, filename); // 'temp/'
+    open_temp_file_path = path.join(host_file_temp_path, filename); // 'temp/'
     console.log(open_temp_file_path);
 
     if (fs.existsSync(open_temp_file_path)) {