Harish - 2016-06-08

I am new to sphinx . I started adaptation of model as per example in tutorial in cmu sphinx and i am getting stuck at this point of adapting observation counts . Even though i have mdef.txt downloaded from interent , it shows
INFO:main.c(318): Reading en-us/mdef.txt
ERROR: "model_def_io.c", line 413: Unable to open en-us/mdef.txt for reading: No such file or directory
FATAL: "main.c", line 1839: initialization failed

Help plz