Problem with SQL Job

Our company changed a Vendor and I changed SSIS package in one step where a Data Flat File FTPed from different location. I tested the package and it works fine. I did not change neither Name of the Package or its location and did not touched a Job that is running this Package on Hourly bases. I ran the job successfully. But it did not awake the Package. But History Log shows that the Job and the Package ran successfully. I never came to this problem before. Probably somebody did and can advise me what should I do. Thank you.