EnvInject - https://github.com/kannanekanath/teamcity-envinject-plugin/wiki

I have used envInject plugin many times with Jenkins and recently someone wrote v1.0 for the same plugin for Teamcity, I thought the format of the .proeprties file (java) and usage would be similar to Jenkins (give path to .Properties file and load env variable to pass), I am getting following error while load .properties file

Exception occured reading/parsing [D:\MyPath\prop1.properties]. Message 

Any ideas?