You can not run multiple instances of ProStockMaster microstock software on the same computer since they access the same stock photography metadata database. Each software instance will try to lock the DB, and the program will fail with “Fatal Error” message. This behavior is by design – no one wants a mess in his stock photos, keywords and  IPTC metadata, and microstock sales stats accessing the same stock images metadata database from 2 or more software applications simultaneously.

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