Mercedes Bengochea

Hello, I'm a postdoc in Paris. I'm performing some behavioral experiments in flies. I am using the Buritrack and is working perfectly. I can not say the same for the CeTrAn analysis. I have the R3.4.1 version installed. I got the following error: XML content does not seem to be XML. I was wondering if I need to install the R2.15.1 version to make it work. Many thanks in advance. Mercedes