求助DPARSF中去线性漂移的问题

请教论坛的各位:在用DPARSF处理功能磁共振时到了去线性漂移步骤时提示存在以下错误,请各位帮忙提示一下哪出问题了,谢谢。
Warning: Escape sequence 'F' is not valid. See 'help sprintf' for valid escape sequences.
> In rest_detrend at 24
In DPARSF_run at 992
In DPARSF>pushbuttonRun_Callback at 976
In gui_mainfcn at 96
In DPARSF at 43
doctor+M 2:43:01
Removing the linear trend: F: nalysis