If you are receiving the error “Unable to open the company file” while trying to convert your data file from a previous version of Sage 50 to the 2014 version it could be caused by a firewall or antivirus software.
Please consult article 16353 in our knowledgebase ( http://bit.ly/GzI35i ) which can be found at na.sage.com/sage-50-accounting-ca and clicking on Get Support under the Support menu in order to find solutions.