ERROR: Unable to compile source files.

HI everyone
i got this error just for this scene , i tried another scene NO problem .

here is the log
link text

i am using Vrayforunreal plugin for testing purposes on another level , i did not use here on this level .
i tried removing the Vrayforunreal plugin and repackage the project and it did this time but i couldn’t open the file whatever i tried on my pc or other pc
and here is log :
link text

please help what should i do ?