JDBC connector extension failing

I am following the instructions as given in the jdbc connector extension: Below are the steps.

This extension leverages the Thingworx FileRepository template to upload a third party JDBC driver file and create an “import-able” extension using the uploaded file.

• To use the builder simply open the JdbcCreator mashup, click the “Choose File” button and select the JDBC driver file you want to use from your local file system.
• Now click the “Upload” button and a link will be displayed below the buttons, “Download Extension File”.
• Click this link and save the zip file. This is your extension. You can now import this into the Thingworx platform.
• The imported extension will create a Thing Template with the name of the file plus “JDBCTemplate”. For example a file named “myDbFile.jar” would create a Template named “myDbFileJDBCTemplate”.
• Use this template to create a new thing and connect to your data source using JDBC.

While importing the downloaded zip file to create the template as given in the last step I am getting the attached error. I am using TX version 7.

Please let me know how to create a jdbc connection with my database.