diff --git a/src/main/java/kellerkinder/HomeFlix/application/MainWindowController.java b/src/main/java/kellerkinder/HomeFlix/application/MainWindowController.java
index 65e6090..f5688c2 100644
--- a/src/main/java/kellerkinder/HomeFlix/application/MainWindowController.java
+++ b/src/main/java/kellerkinder/HomeFlix/application/MainWindowController.java
@@ -358,28 +358,26 @@ public class MainWindowController {
 	 * check if all posters are cached, if not cache the missing ones
 	 */
 	void checkAllPosters() {
-		dbController.refreshDataBase(); // refreshes the database after a source path was added
-		
-		// get all not cached entries, none of them should have a cached poster
 		ExecutorService executor = Executors.newFixedThreadPool(5);
 
-		for (FilmTabelDataType entry : dbController.getAllNotCachedEntries()) {
-//			System.out.println(entry.getStreamUrl() + " is NOT cached!");
+		dbController.refreshDataBase(); // refreshes the database after a source path was added
 
+		// get all not cached entries
+		for (FilmTabelDataType entry : dbController.getAllNotCachedEntries()) {
 			Runnable OMDbAPIWorker = new OMDbAPIController(entry);
 			executor.execute(OMDbAPIWorker);
 		}
 		executor.shutdown();
 
 		// TODO show loading screen
-		
-		// we might need this as otherwise it would load before all tasks are finished
+
+		// wait for all OMDbAPI requests to finish
 		try {
 			executor.awaitTermination(1, TimeUnit.MINUTES);
 		} catch (InterruptedException e) {
 			LOGGER.error(e);
 		}
-		
+
 		System.out.println("finished refresh");
 	}
 	
diff --git a/src/main/java/kellerkinder/HomeFlix/controller/DBController.java b/src/main/java/kellerkinder/HomeFlix/controller/DBController.java
index d0ba3db..1f7fa5e 100644
--- a/src/main/java/kellerkinder/HomeFlix/controller/DBController.java
+++ b/src/main/java/kellerkinder/HomeFlix/controller/DBController.java
@@ -420,7 +420,7 @@ public class DBController {
 			connection.commit();
 			ps.close();
 		} catch (SQLException e) {
-			LOGGER.error("Ups! an error occured!", e);
+			LOGGER.error("Ups! An error occured!", e);
 		}
 	}
 	
@@ -437,7 +437,7 @@ public class DBController {
 			connection.commit();
 			ps.close();
 		} catch (SQLException e) {
-			LOGGER.error("Ups! an error occured!", e);
+			LOGGER.error("Ups! An error occured, while setting cached = DATE for {}.", streamUrl, e);
 		}
 	}
 	
@@ -459,7 +459,7 @@ public class DBController {
 			rs.close();
 			ps.close();
 		} catch (SQLException e) {
-			LOGGER.error("Ups! an error occured!", e);
+			LOGGER.error("Ups! An error occured, while rerading the cached date for {}.", streamUrl, e);
 		}
 		
 		return cacheDate;
@@ -507,7 +507,7 @@ public class DBController {
 			connection.commit();
 			ps.close();
 		} catch (Exception e) {
-			LOGGER.error(e);
+			LOGGER.error("Ups! An error while adding cache data for {}.", streamUrl, e);
 		}
 	}
 	
@@ -526,7 +526,7 @@ public class DBController {
 			rs.close();
 			ps.close();
 		} catch (Exception e) {
-			LOGGER.error("Ups! error while getting the current time!", e);
+			LOGGER.error("Ups! An error while searching for {} in the cache.", streamUrl, e);
 		}
 		
 		return retValue;
@@ -572,7 +572,7 @@ public class DBController {
 			rs.close();
 			ps.close();
 		} catch (SQLException e) {
-			LOGGER.error("Ups! an error occured!", e);
+			LOGGER.error("Ups! error while getting the current time for {}.", streamUrl, e);
 		}
 		
 		return cacheData;