posted this on May 30, 2012 16:34
Note: If your computer is running the 64-bit edition, “64-bit Edition” will appear at the end of your operating system; otherwise, your computer is running the 32-bit edition.
Also, in the updates page (http://www.nitropdf.com/support/downloads), there should be a hint about what edition your PC is running. (see sample screenshot below)
If you have any questions, please submit a ticket to our team at www.nitropdf.com/support/ticket
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