?
We'll be adding some options to control text encoding for the actions which create a text file in 4.1.1, but in the meantime if you want to strip out the byte order marker, it should work to add a Search/Replace File Contents action immediately after the create file action that matches only the created file. Then, enable the Use Regular Expression option and put in a Regex that will match nothing, such as ^$
The Search/Replace action should strip out the characters at the beginning of the file. Alternatively, it would be pretty straightforward to create an alternative Create File action that never writes a BOM using the script repository feature added in BuildMaster 4.1.