Actuate e reporting 11 sp4: actuate was unable to copy your design file to the backup file error mes

Migrateduser

Actuate e reporting 11 sp4: actuate was unable to copy your design file to the backup file <br>
C:\program files(x86)\actuate11\erdpro\examples\configurationfile\library\sample_sfdata_library.rob. Please save to a different name. This error message Is displaying whenever I tried to run the report file after designing the report.<br><br>
Please help me to resolve this issue <br>
Thanks in advance <br>
Mayur