Can't find null pointer

In my build I get an error:

LogWindows: Warning: CreateProc failed: The system cannot find the file specified. (0x00000002)

but it doesn’t say why or which file has the pointer. Can anyone make sense of my log or give tips on how to get more verbose debug messages? It would be nice to be able to tell the contents of each package as it crashes at package 20786.

(Had to zip the log with rar, it’s 22 mb)