When I built my application with romebuilder.
It complained like,
Error : File './/src/tasks/LPTXEGainCalib.cpp' has an invalid header !!!
Error : File './/src/tasks/LPTXETimeCalib.cpp' has an invalid header !!!
Error : File './/src/tasks/LPTUTTask.cpp' has an invalid header !!!

Headers looks like,
//// Author: Ryu Sawada
/////////////^@//////////////////////////////////////////////////////////////////
//                                                                            //

Thre first time to build Just after I removed ^@, builder stopped warning. 
But after that  ^@ appeared again and builder starts warning.

I have several task files, but builder adds ^@ always these three files.

My source files are here.
cvs -d :ext:pc4466.psi.ch:/usr/local/cvsroot co lpframework