HI Neeraj:
It is possible that the environment is setup incorrectly, so that Chemkin doesn't know where to look for the file. The default is in the working folder.
Please try source either chemkinpro_setup.csh or chemkinpro_setup.ksh in ansys_inc\v222\reaction\chemkinpro.linuxx8664\bin directory. This will set up the necessary environment for running Chemkin on Linux.
Best Regards,
Judy
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