Windows considers the Program Files folder as a system folder and requires admin rights to write to a file in it. Since the portable edition of Bible Analyzer writes the config.ini and other files back into the folder, you get this warning. Place the folder under your My Documents folder, which is owned by the user, and you should be able to run BA normally.
Developer, Bible Analyzer
But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness. (Rom 4:5 AV)