Sentiment Analysis

We are analyzing customer responses for a consumer product.  The data has been pulled from web based responses, all in German, and placed in an Excel file.  We are then extracting only the text review column from the Excel file and feeding this into Aylien´s sentiment analysis process.  We have 1015 records, not all that much to read, but the system simply goes into a spin cycle and never concludes.  We have waited over 40 minutes thinking that perhaps the German text was causing problems, but this is too long and we have tested the setup with a single record of German text and it appears to work fine.  We are obviously missing something.  Can someone help?