Added more meaningful error messages

index.js

@@ -530,5 +530,6 @@ async.series([
 		});
 	}
 ], err => {
+	debugger;
 	if (err) logger.error("Error during startup: " + err.message);
 });

libs/TaskManager.js

@@ -105,7 +105,13 @@ module.exports = class TaskManager{
 	restoreTaskListFromDump(done){
 		fs.readFile(TASKS_DUMP_FILE, (err, data) => {
 			if (!err){
-				let tasks = JSON.parse(data.toString());
+				let tasks;
+				try{
+					tasks = JSON.parse(data.toString());
+				}catch(e){
+					done(new Error(`Could not load task list. It looks like the ${TASKS_DUMP_FILE} is corrupted (${e.message}). Please manually delete the file and try again.`));
+					return;
+				}
 
 				async.each(tasks, (taskJson, done) => {
 					Task.CreateFromSerialized(taskJson, (err, task) => {

libs/odmRunner.js

@@ -111,7 +111,7 @@ module.exports = {
 					let json = JSON.parse(output.join(""));
 					done(null, json);
 				}catch(err){
-					done(err);
+					done(new Error(`Could not load list of options from OpenDroneMap. Is OpenDroneMap installed in ${config.odm_path}? Make sure that OpenDroneMap is installed and that --odm_path is set properly: ${err.message}`));
 				}
 			})
 			.on('error', done);