error r(603) when trying to save a local macro

I´m using stata 13 on a windows 8 plataform. I have 87 variables and 219,688 observations.
I´m trying to use local command and save it later, but stata keeps saying that the file could not be oppened.
Here is the command i´m using and the error i´m getting

local filename="output/summary/"+"EAandMF_"+"$timep"

. save "`filename'", replace
(note: file output/summary/EAandMF_QTR.dta not found)
file output/summary/EAandMF_QTR.dta could not be opened
r(603);

I googled this error and saw somethings about antivirus. I shut it down, but still not working. I also tryed to put stata to seelp for several minute before give the save command, but didn´t work either.

Does anyone know how to deal with this error?