fix file name in image thumbnail report

src/main/scala/ch/memobase/MediaTransformations.scala

@@ -32,11 +32,15 @@ object MediaTransformations extends Logging {
   import sys.process._
 
   private def executeCommand(command: String): Try[Int] = Try {
+    logger.debug(s"Execute: $command")
     val stderr = StringBuilder.newBuilder
     val errorCode = command ! ProcessLogger(logger.debug(_), stderr append _)
     if (errorCode > 0) {
-      throw new IOException(s"application ${command.split(' ')(0)} exited with code $errorCode: ${stderr.toString()}")
+      val errorMsg = s"application ${command.split(' ')(0)} exited with code $errorCode: ${stderr.toString()}"
+      logger.warn(errorMsg)
+      throw new IOException(errorMsg)
     } else {
+      logger.debug("Command execution successful")
       errorCode
     }
   }

src/main/scala/ch/memobase/RecordProcessor.scala

@@ -110,7 +110,7 @@ class RecordProcessor(fileHandler: DisseminationCopyHandler,
     val destPreviewFile = cachedImageFilePath(id, mimeType)
     val (width, height) = getThumbnailDimensions
     val resThumbnail = fileHandler.createImageThumbnail(destImageFile, destPreviewFile, width, height)
-    val outcomeThumbnail = createOutcome(resThumbnail, id, ImageThumbnail, destImageFile)
+    val outcomeThumbnail = createOutcome(resThumbnail, id, ImageThumbnail, destPreviewFile)
     outcomeMediaFile ++ outcomeThumbnail
   }