Heka not reading log file in windows

[vpriyada]

Hi All,
I have installed Heka 0.10 version on windows server 2012 R2 machine. I have configured heka to read a log file that is being written by an exe.
Heka is started from command line with LogOutput as the output plugin. Heka does not read any of the log lines from the log file.
But if we open the log file and manually edit the file ( just giving a space/ enter) heka then starts to read all the log lines from the file.
Could any of you throw suggest opinions like what could the issue be. If the splitter/delimiter is not correct then it will not work after I edit manually.