Catch exception resulting from reading csv files

[johanneshiry]

At the moment, when CSV files are read, the possible exceptions (mainly FactoryExceptions) are not captured, nor are the sources closed. This results in an alert window for each exception that is thrown which subsequently spams the whole screen if several exceptions occur.

I would suggest to at least catch the exceptions to avoid an application crash. Additionally, one might consider implementing a mechanism that catches the first exception that occurs during runtime and then blocks the further thread execution.